UK Athletics Age Groups: Under-12 to Masters Explained
The UK athletics age groups after the 2026 change, from under-10 to masters, with the 31 August cut-off used in England and how to work out your own group.
By CricketTaken EditorialPublished Track & Field in Britain26 min read
- New groups in force
- 1 April 2026
- Cut-off for under-18 and below
- 31 August
- School years per group
- 2
- Masters entry age
- 35
Since 1 April 2026, under the UKA Rules for Competition, young athletes in the UK compete as under-10, under-12, under-14, under-16, under-18 and under-20. Each band covers two school years. Above them come under-23, senior and masters. For under-18 and every group below it, membership is decided by the athlete's age on 31 August at the end of the competition year, which runs from 1 October to 30 September; that is the date used in England and Wales, and it means the groups line up with school years. Under-20 adds a second date, 31 December, and masters ignore fixed dates altogether.
The change was felt at once. A Year 9 hurdler in England who had finished the previous summer as a first-year under-15 found she was now a first-year under-16, facing a longer hurdles race with the flights set further apart, and with the year group above her still the older half of her band. Nothing about her had changed. The ladder had.
The UK athletics age groups from 1 April 2026
The whole ladder fits in one table. The school years are those used in England and Wales, and the age column is the athlete's age on the 31 August that falls at the end of the competition year.
| Age group | School years | Age on 31 August |
|---|---|---|
| Under-10 | Years 3 and 4 | 8 or 9 |
| Under-12 | Years 5 and 6 | 10 or 11 |
| Under-14 | Years 7 and 8 | 12 or 13 |
| Under-16 | Years 9 and 10 | 14 or 15 |
| Under-18 | Years 11 and 12 | 16 or 17 |
| Under-20 | Year 13 and the year after | 18 or over, and under 20 on 31 December |
| Senior | Beyond | 20 or over on 31 December |
The names are slightly misleading and always have been. "Under-14" does not mean everybody younger than fourteen: it means the two-year band of twelve- and thirteen-year-olds, and an eleven-year-old is an under-12. The rule book is explicit that each label refers to its two-year category only.
Note also what the label promises about birthdays, which is nothing. A Year 8 child born in early September turns fourteen a few days into Year 9 and spends the cross-country season, the indoor season and the whole of the following summer as a fourteen-year-old under-16. A group is a cohort, not an age.
Club people speak of bottom-year and top-year athletes within a band, and in the younger groups that distinction often matters more than the band itself. Older vocabulary survives alongside the new. An under-20 is still a junior to most coaches and an under-18 a youth, the terms the international federation itself used until the middle of the last decade.
Separate boys' and girls' competition runs through every band, and from under-18 upwards the rule book says men and women.
Under-10 and under-12: the groups the rule book leaves to the home countries
Here is a detail that surprises parents. The UKA Rules for Competition say, in terms, that they do not formally cater for athletes under the age of twelve. The formal structure of events, specifications and championships begins at under-14.
The two youngest groups exist all the same. They are run by the four home-country federations, England Athletics, Scottish Athletics, Welsh Athletics and Athletics Northern Ireland, and the stated aim is to introduce children to running, jumping and throwing in a setting built around fundamental movement and enjoyment. Competition for these ages is expected to be multi-event or team-based: a child does a sprint, a jump and a throw and scores across all of them, instead of entering the 100 metres and going home. England Athletics points clubs towards formats of this kind for primary-age children.
Individual events are not forbidden. The federations have published technical parameters, a 70 metres hurdles race for under-12 girls and a 75 metres one for boys, for instance, both over barriers 68.5 centimetres high, so that a club or an open meeting can offer something to its youngest members. Those parameters are printed in the rule book for reference and labelled as sitting outside it.
Guidance on distance is in the same spirit. The rule book gives a recommended maximum of 3,000 metres for any under-12 running cross-country or on the road, and says the focus of such events should be on participation rather than competition.
The registration rules follow the same line. Athletes from under-14 upwards must be registered with their home-country federation to compete; for under-10s and under-12s each federation decides. What registration involves in England is set out in our guide to England Athletics affiliation and licences, and a parent choosing a first club will find the practical side covered on the page about joining an athletics club.
The judgement behind all this is sound. Ten-year-olds who specialise are, in the main, ten-year-olds who are early developers, and the sport has lost a great many of them by sixteen. Winter indoor formats for these ages have worked on the multi-event principle for decades, as our guide to Sportshall athletics describes.
Working out which group you are in
Forget the athlete's age today. It is the wrong number, and it is the cause of nearly every mistaken entry form.
- Find the competition yearIt runs from 1 October to 30 September. A race in November 2026 and a meeting in July 2027 are in the same competition year.
- Find its 31 AugustTake the 31 August that falls inside that competition year, which is the one at the end of the summer season.
- Work out the age on that dateCount how old the athlete will be on that day, whether or not the birthday has happened yet.
- Read off the groupTwelve or 13 is under-14, 14 or 15 is under-16, and 16 or 17 is under-18.
- Check under-20 separatelyAn athlete of 18 or over on that date is under-20 only if still under 20 on 31 December of the calendar year.
The method in the UKA Rules for Competition from 1 April 2026 for under-18 and below. Scotland and Northern Ireland use a 31 December date instead of 31 August.
Because the school year in England and Wales also turns on 31 August, the result is that everybody in a school year is in the same age group, and stays in it from the first cross-country league race in October to the last track meeting in September. The athlete's date of birth is still what counts. A child educated a year ahead or held back a year competes with their birth cohort, not their classmates.
An autumn birthday
Take an athlete born on 20 October 2012. For the summer of 2026 the relevant date is 31 August 2026, when she is thirteen, so she is an under-14. She was thirteen for the entire season, having had her birthday the previous October, and was among the oldest in the group.
On 1 October 2026 a new competition year begins. Its 31 August is in 2027, when she will be fourteen. She becomes an under-16 that day, three weeks before she actually turns fourteen.
A summer birthday
Now an athlete born on 20 July 2013, in the same school year. On 31 August 2026 he is thirteen, by six weeks. He is an under-14 too, in the same races as the girl's male equivalents born nine months earlier, and he was twelve when the season opened in April. He moves to under-16 on the same October day.
This is the relative age effect made visible. Two athletes in one group can be almost a full year apart, and at thirteen a year is a great deal of height and strength. The cut-off cannot remove that; any date would produce it. What the two-year band does is add a second layer, because the summer-born first-year in a group is competing against autumn-born second-years close to two years older.
Born in the first week of September
The sharpest case sits either side of the line. A child born on 31 August 2013 is thirteen on the cut-off date in 2026 and a second-year under-14. A child born on 1 September 2013 is twelve on that date, a first-year under-14, and will be an under-14 again in 2027. One day's difference in birth is one year's difference in sporting age for as long as they are juniors.
Why under-20 runs on a different calendar
Under-20 is the one junior group with two conditions. The rule for track and field confines it to athletes who are eighteen or over on 31 August within the competition year, and under twenty on 31 December in the calendar year of competition.
The first condition is the same school-year logic as the groups below: an athlete enters under-20 in Year 13. The second is borrowed from the international definition. World Athletics classes as under-20 any athlete aged eighteen or nineteen on 31 December in the year of competition, and it is against that definition that world and European under-20 championships are entered and under-20 records are kept. The UK rule on records says the same: for a track and field record at under-20 or under-23 level, the athlete must still be under the age in question on 31 December of the calendar year of the performance.
Putting a school-year floor under a calendar-year ceiling has a consequence that is easy to miss. Time in the group depends on the month of birth.
An athlete born on 15 October 2008 is eighteen on 31 August 2027 and so becomes an under-20 for the 2027 season. In 2028 he turns twenty in October. He is not under twenty on 31 December 2028, so he is a senior for the whole of that year. One season as an under-20.
His classmate born on 15 May 2009 is also eighteen on 31 August 2027 and joins the group at the same moment. In 2028 she is nineteen on 31 December. She is an under-20 again. Two seasons.
So the oldest third of each school year, those with birthdays from September to December, get a single year as under-20s, and everybody else gets two. Under the pre-2026 rules the group was longer still, running from the age of seventeen, and the same December ceiling applied. It is a messy arrangement and the mess is deliberate: a domestic under-20 group that did not match the international one would produce national champions who were ineligible for the championship their title was meant to lead to.
The same care has not been extended to under-18, and it is worth being honest about that. World Athletics defines under-18 by age on 31 December as well, sixteen or seventeen. The UK rule uses 31 August. An athlete born in October 2009 is a domestic under-18 throughout the summer of 2027 and yet is eighteen by the end of that calendar year, which makes her an under-20 for international purposes. Selection for a European under-18 team follows the international date. The domestic label and the international one share a name and not quite a membership.
What changed in 2026 and the case made for it
For decades the British ladder went under-11, under-13, under-15, under-17 and under-20. It was a domestic peculiarity. International age-group athletics is organised at under-18 and under-20, so a British under-17 was preparing for championships in a category that did not exist abroad, with hurdles and implements that differed from the ones used there.
The change was made by UK Athletics for all four home countries, and the new groups took effect in the rule book dated 1 April 2026, which states that U14, U16 and U18 replace U13, U15 and U17.
| Before April 2026 | School years in track and field | From April 2026 | School years |
|---|---|---|---|
| Under-11 | Years 4 and 5 | Under-10 and under-12 | Years 3 to 6 |
| Under-13 | Years 6 and 7 | Under-14 | Years 7 and 8 |
| Under-15 | Years 8 and 9 | Under-16 | Years 9 and 10 |
| Under-17 | Years 10 and 11 | Under-18 | Years 11 and 12 |
| Under-20 | Years 12, 13 and after | Under-20 | Year 13 and after |
Three arguments were made, and they are of unequal strength.
The strongest concerned the top of the old ladder. Under-20 used to begin in Year 12 and could last three years, so a sixteen-year-old lower-sixth pupil in the first weeks of the summer was placed with nineteen-year-olds, the boys suddenly throwing a six-kilogram shot and hurdling at 99.1 centimetres. Drop-out at exactly that step was the problem the reformers pointed to. Cutting the group back and inserting an under-18 band with its own lighter specifications puts a rung where there was a gap.
The second was alignment with the international under-18 and under-20 categories, which is real as far as hurdle heights and throwing weights go and, as the previous section shows, only partial as far as dates go.
The third is the neatest and the least discussed. Under the new bands athletes are at the top of their age group in non-exam years. The second-year under-14 is in Year 8, the second-year under-16 in Year 10, the second-year under-18 in Year 12. Under the old track and field groups the oldest under-17s were in Year 11, attempting their best season in the weeks of their GCSEs.
The awkward first season
No transition of this kind is fair to everybody. An athlete in Year 8 in the summer of 2025 was a first-year under-15, the younger half of the group. In 2026, in Year 9, the same athlete became a first-year under-16, the younger half again. Their friends a year above went from second-year under-15 to second-year under-16 and were the senior cohort twice running. Nobody designed that outcome, and nothing could be done about it short of holding the change back for ever.
What each age group is allowed to do
Age groups are restrictions as much as categories. The rule book limits what a young athlete may contest, how often in a day, and against whom, and the limits loosen one band at a time.
| Group | Events in one day | Longest track race | Notable restrictions |
|---|---|---|---|
| Under-14 | Four, of which one must be a relay | One mile | No 300 or 400 metres, no triple jump |
| Under-16 | Four, of which at most three individual | 3000 metres | 300 metres at championships in place of 400 |
| Under-18 | Four, of which at most three individual | 5000 metres | May enter competitions for older athletes |
| Under-20 | Five | 10,000 metres | Uses senior implements when competing against seniors |
Several of these repay a closer look.
The under-14 ban on the triple jump is about growing joints and the loading of the hop and step, and it explains a footnote that appeared in schools competition in 2026 restricting the event to the older year. The ban on 300 and 400 metres for the same group, and the rule that an under-14 may run only one race between 600 metres and a mile in a day, are about keeping children out of repeated hard efforts they cannot yet recover from. Under-16s have an equivalent rule for races between 600 and 3000 metres.
Competing up is tightly controlled at the bottom and open at the top. An under-14 may compete against under-16s but nobody older, an under-16 against under-18s and nobody older, in each case using the older group's implements in the throws. Open graded meetings, where races are seeded by time instead of age, are the standing exception. From under-18 an athlete may enter senior competition, subject to the distance limits above.
Combined events take the athlete out of everything else. A young athlete doing a pentathlon or heptathlon may not enter any other event that day.
Away from the track, distances are capped by group. The recommended cross-country distances run from 4000 metres for under-14s through 5000 and 8000 to 10,000 metres for under-20s, and race walking has its own maximums, starting at 3000 metres for under-14s. All of this lives in Rule TR3 of the UKA Rules for Competition and its supplements, which is the place to check before entering a child for anything unusual.
Lighter implements and lower hurdles, group by group
Every band has its own equipment, and the steps are the most tangible thing an athlete notices on moving up. In outline only, since each event has its own page: the shot is the clearest example.
A boy's shot gains a kilogram at every step and more than that at the last. A girl's barely moves between twelve and seventeen and then jumps by a third. The reasons for those weights, and the rules of the circle that do not change with age, are on our page about the shot put and its fouls. The javelin, discus and hammer climb in the same way: the boys' javelin goes from 500 grams at under-14 to 600, 700 and finally 800, the girls' from 400 to 500, where it stays at under-18, and then 600.
Hurdles change in three dimensions at once, height, race distance and the spacing between flights.
The under-14 girl runs 75 metres over eight hurdles, the under-16 girl 80 metres over eight, and from under-18 it is the full 100 metres over ten. Boys go from 80 metres to 100 and then to the 110 metres they will run for the rest of their careers, with the barrier rising at each stage until it reaches the senior 106.7 centimetres. The long hurdles race is 300 metres over seven flights at under-16 and 400 metres thereafter. The full tables, spacings included, are in our guide to hurdle heights for every event and age group.
Combined events follow the same pattern of adding as the athlete grows. Under-14s contest a pentathlon, five events that can be held in a day, the boys' beginning with the 80 metres hurdles and ending with an 800 metres. By under-16 the girls' outdoor competition is a two-day heptathlon. The senior versions are laid out in our explainer on the seven heptathlon events and their order.
One caution about all of these figures. They are the 2026 specifications. Because the groups themselves were redrawn, several events for the younger bands were given new parameters at the same time, and anybody working from a chart printed before that year will have the wrong hurdle on the wrong mark.
Cross-country, road and track: one date now, and where it still differs
The least visible part of the 2026 reform may prove the most useful. All the main disciplines now share a competition year and an operative date. Track and field, race walking, road running and cross-country all take the athlete's age on the 31 August at the end of a competition year that starts on 1 October.
It was not always so. Under the rules that applied before, as we read them, track and field took the age at the 31 August that closed the season and cross-country took it at the 31 August that opened the winter. The effect was that the groups meant different things in different sports. An under-15 on the track was in Year 8 or 9; an under-15 on the country was in Year 9 or 10. A Year 10 runner could spend a January weekend as an under-15 in a cross-country league and the next as an under-17 in an indoor 800 metres.
For cross-country, then, 2026 changed the label on each cohort and left the cohort alone: the old winter under-15s and the new under-16s are the same two school years. For track and field every band moved up a school year. That distinction explains why distance-running clubs found the change painless and why throws and hurdles coaches, with new implements and new race distances to plan around, did not.
A winter that straddles two calendar years is no longer a puzzle. October to March sits inside one competition year, so an athlete runs the autumn relays, the county and area championships and the national in February in one group, and carries that group straight into the summer. The rule book adds a small allowance for September: a cross-country or road event held that month as a qualifier for a league or championship in the coming competition year may use the coming year's age groups. How the biggest of those winter championships is organised is covered on our page about the English National Cross Country Championships.
Scotland, Northern Ireland and the hills
Three exceptions remain, and a guide that called the 31 August rule universal would be wrong.
Scotland takes the qualifying date as the 31 December after the end of the competition year, and Northern Ireland as 31 December at the end of the year of competition. Their groups are therefore calendar-year cohorts, closer to the international definitions than those in England and Wales, though not aligned to either country's school year, which turns on a different date again. The rule book states that its 31 August references apply to England and Wales.
Fell, hill and mountain running use a competition year that is the calendar year, with age taken on 31 December.
And under-20 differs between disciplines. On the country and the road an under-20 is simply an athlete aged eighteen or nineteen on 31 August within the competition year, and a senior is anyone twenty or over on that date. The December ceiling described earlier belongs to track and field alone.
Under-23 and senior: a label and a threshold
Nothing happens to an athlete's competition on becoming a senior except that the last restrictions fall away. The track and field rule defines a senior as a competitor at least twenty years old on 31 December in the calendar year of competition. Men's implements and hurdles reach their final specification, the 10,000 metres ceiling goes, and there are no more limits on events in a day.
In practice the threshold is porous in one direction. Under-20s may race seniors in open track events up to 10,000 metres, county and national championships included, and may enter senior field events provided they use the senior implement. Under-18s may take part in competitions for older athletes at the organiser's discretion. That is how a seventeen-year-old ends up in the final of the national championships, an event described in our guide to the British championships and trials. What a junior cannot do is carry a mark across categories: a put with the 7.26-kilogram shot in a senior competition is a senior performance, and does not count on an under-20 list kept for the six-kilogram implement.
The disciplines disagree at this boundary too. An athlete born in October 2008 is an under-20 throughout the cross-country season that ends in early 2028, by the 31 August test, and at the same time a senior on the track, indoors that winter and outdoors the following summer, by the 31 December one.
Internationally there are floors as well. World Athletics sets minimum ages for its senior championships, so the youngest athletes are admitted only in certain events, and the longest road events carry higher limits.
Under-23 is something else. It has no specifications, no restrictions and no separate rules. It is a category laid over the senior ranks, covering athletes who are under twenty-three on 31 December of the year, and it exists because the gap between a nineteen-year-old junior champion and a twenty-seven-year-old international is where most careers are lost. European Athletics holds an under-23 championship, the home countries stage under-23 championships of their own, usually alongside the under-20s, and UK records are recognised at the level. An under-23 title is a senior title with an age limit attached.
Masters athletics: five-year bands from the 35th birthday
At thirty-five the ladder starts again, running the other way. Both World Athletics and the UK rule book define a master as an athlete who has reached their thirty-fifth birthday, and competitions for masters are confined to those at least thirty-five on the day of competition.
- 35Entry age in years
- 5Width of each band in years
- 99.1Men's hurdle height at 35 in cm
- 68.6Men's hurdle height at 80 in cm
Entry age and band width as defined in the World Athletics and UKA rules; hurdle figures are for the men's sprint hurdles at each end of the masters range.
Bands are five years wide and written with a letter for sex and the lower age: M35, W40, M65, W80. They are open-ended at the top, and national championships have been contested by athletes in their nineties.
The crucial difference from the junior system is that there is no cut-off date. A master's band is decided by age on the day. Somebody who turns fifty on a Saturday competes as an M45 on the Friday and an M50 on the Sunday, and masters athletes are known to plan a season around a birthday, since the first months in a new band are when they are youngest relative to their rivals. Results for two athletes born in the same year can therefore show different bands at the same meeting.
Equipment steps down as it once stepped up. The men's sprint hurdles illustrate it, and the hammer follows the same bands.
| Men's age band | Sprint hurdles race | Hurdle height | Hammer weight |
|---|---|---|---|
| 35 to 49 | 110 metres | 99.1 cm | 7.26 kg |
| 50 to 59 | 100 metres | 91.4 cm | 6 kg |
| 60 to 69 | 100 metres | 83.8 cm | 5 kg |
| 70 to 79 | 80 metres | 76.2 cm | 4 kg |
| 80 and over | 80 metres | 68.6 cm | 3 kg |
An eighty-year-old man hurdles at the height set for twelve-year-old girls and throws the hammer a fifteen-year-old girl uses. The symmetry is not accidental.
Age grading
Comparing a W60's 5000 metres with an M35's needs a common scale, and age grading supplies one. Tables maintained for masters athletics give, for each event and each year of age, a standard close to the best that has been achieved at that age. An athlete's performance is expressed as a percentage of the standard. A result in the low nineties is world class for the age; a club runner might score in the sixties. Age-graded prizes at road races and the age-grade percentage familiar from weekly timed runs use the same idea.
Beyond the stadium the labels are looser. Road race organisers are free to set whatever veteran categories they like, and many still award prizes in ten-year bands from forty. The rule book itself keeps an older usage for trail running, where a veteran is aged forty or over.
School athletics uses different groups
A child can be in one age group for a club on Saturday and another for a school on Wednesday, and both are correct.
The English Schools' Athletic Association, which runs the schools championships in England, has three groups. Juniors are normally in Years 8 and 9, intermediates in Years 10 and 11, seniors in Years 12 and 13, defined as under fifteen, under seventeen and under nineteen on the 31 August at the end of the school year. They use the same cut-off date as the club system. They are offset from it by a year.
So a Year 9 pupil is a first-year under-16 at the club and a second-year junior at school. A Year 10 pupil is the reverse: top of the club group, bottom of the school one. Before 2026 the two systems matched in track and field, the school junior group being the club under-15s under another name, and the new offset is a direct result of the club ladder moving and the schools ladder staying where it was.
Cross-country shows the offset from the other side. The schools junior race is for Years 8 and 9, the club under-14 race for Years 7 and 8 and the under-16 for Years 9 and 10, so a county's schools junior team is drawn from two different club groups.
The friction showed immediately in the events that depend on specifications. For its 2026 championships the schools association ran its hurdles races by the club bands, under-16 and under-18 with a separate race for Year 13, and offered no hurdles to Year 8 pupils at all, because a single junior race could no longer use a hurdle that was right for both of its year groups. How pupils reach that meeting and how its groups work in practice is the subject of our guide to qualifying for the English Schools championships.
Scotland, Wales and Northern Ireland have schools associations with categories of their own, and independent-school and primary competitions frequently go by single year groups. On a school entry form the question to ask is always which body's rules the meeting is held under.
Records and rankings after the change
What happened to the under-15 record when under-15 ceased to exist? The honest answer is that nothing happened to it, and that it stopped being added to.
A performance belongs to the athlete, the date and the specification it was set under. A 75 metres hurdles time run by a fourteen-year-old girl in 2019 over 76.2-centimetre barriers remains exactly that. The best performances achieved in the under-13, under-15 and under-17 groups stand as closed lists, complete as of the end of the 2025 season, and they will be cited for as long as anybody is interested in who was the quickest fourteen-year-old the country has produced.
They could not simply be relabelled, for two reasons. The cohorts differ: in track and field the old under-15 list is the work of athletes in Years 8 and 9, the new under-16 list of athletes in Years 9 and 10. And the events differ. The under-14 girls' 75 metres hurdles is run over a lower barrier than the under-15 race of the same length was; the under-16 boys' sprint hurdles is 100 metres where the under-15 race was 80. A new group with new specifications has no history, and lists for it have to begin with the first performances made under it.
Where the specification did not change, a flat 800 metres, a high jump, statisticians can rebuild a list retrospectively by sorting every past performance according to the age the athlete would have had under the new definition. Whether a particular published list has been built that way or started from April 2026 varies with who compiles it, and readers should check the heading before quoting a figure as a record. Lists of bests by single year of age, the best ever by a thirteen-year-old and so on, sidestep the problem entirely and were unaffected.
Under-20 and under-23 records carried on undisturbed, since their definition by calendar year did not move. How national records are ratified at those levels and at senior level is explained on our page about British records and who holds them.
Rankings are a simpler matter. A results database stores the date of birth and the date of the performance, and labels each result with the group the athlete was in at the time. A profile that spans the change will show an athlete as an under-15 in the results of one summer and an under-16 in the next, which is accurate and looks like an error. Annual ranking lists from 2026 onwards are compiled for the new groups, earlier ones for the old. The database most British athletes use is described in our guide to how Power of 10 ranks performances.
More background on the sport, its events and its governing bodies is collected in the athletics pages of this site and, for readers here, on the England hub.