Kids triathlons in the UK
Triathlons for children and juniors are a great way to introduce them to the sport. Courses are usually short and held on closed roads to be safe and accessible for kids. We've made it super-simple to find events by age - but don't forget, it's usually the child's age on 31 December of the year of the event! Select your location for kids triathlons in your area or scroll down to see events coming up.
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Kids triathlons in 2025
Featured events are listed below - select your region to see all events.


- Sat 24 - Sun 25 May
- £35-£245
Lough Cutra Castle Triathlon and Multisport Festival
Get active in the beautiful grounds and surrounding area of stunning South Galway in the discipline of your choice! Recruit your friends and celebrate your challenge in the festival village.
- Sprint triathlon 3
- Super sprint triathlon
- Novice triathlon
- Olympic triathlon
- Half Ironman
- + 17 more races

- Sat 7 - Sun 8 Jun
- £35-£375
Chateau de Chantilly Triathlon and Multisport Festival
The majestic château hosts this epic multi-sport weekend for athletes of all levels, complete with a range of disciplines, festival village, friendly spectators and top reviews all-round!
- Ironman
- Half Ironman
- Olympic triathlon
- Sprint triathlon 2
- Super sprint triathlon
- + 11 more races

- Sun 15 Jun
- £25-£99
Plymouth Triathlon & Plymouth Swim
Previously known as Mount Edgcumbe Triathlon, triathletes and swimmers of all abilities can experience a truly exceptional venue, finishers medal, t-shirt and memorable day out at a fantastic event.
- Kids triathlon 3
- Sprint triathlon
- Olympic triathlon
- Half Ironman
- Sea swim 3

- Sat 21 - Sun 22 Jun
- £35-£295
Cholmondeley Castle Triathlon and Multisport Festival
Get active in the beautiful grounds and surrounding area of stunning Cheshire in the discipline of your choice! Bring your friends and celebrate completing your challenge in the festival village.
- Relay triathlon 2
- Kids triathlon 5
- Novice triathlon
- Super sprint triathlon
- Sprint triathlon 2
- + 16 more races

- Sat 28 Jun
- £18-£29
ATW Childrens Triathlon Mallory Park
Mallory Park Junior Triathlon: Where Dreams Take Flight! Nurturing the next generation of triathletes, providing a safe and exhilarating environment for children to discover the thrill of multisports.
- Kids triathlon 5

- Sun 29 Jun
- £30-£79
English Riviera Triathlon
Start with a great sea swim in warm waters then on to the bikes for a closed road and flat bike leg. Finally there's a run with views of the sea. Torre Abbey Sands has excellent water quality.
- Sprint triathlon
- Olympic triathlon
- Super sprint triathlon
- Kids triathlon 2

- Sat 12 - Sun 13 Jul
- £20-£95
Ripon Triathlon Festival
A family-friendly event in partnership with the Brownlee Foundation, for triathletes of all skill levels including a Sprint, Standard, Middle distance tri, Swims, Aquabike, Relay and Juniors.
- Lake swim 4
- Sprint triathlon
- Sprint aquabike
- Standard aquabike
- Olympic triathlon
- + 5 more races

- Sat 19 - Sun 20 Jul
- £35-£295
Belvoir Castle Triathlon and Multisport Festival
A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in the discipline of your choice! Celebrate in the festival village afterwards.
- Kids triathlon 4
- Super sprint triathlon
- Sprint triathlon 2
- Olympic triathlon
- Half Ironman
- + 14 more races

- Sun 17 Aug
- £16-£28
ATW Oundle Children’s Triathlon
ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Childrens Triathlon! Ideal for all levels including very first attempts at triathlon.
- Kids triathlon 5

- Sat 27 - Sun 28 Sep
- £35-£295
Hever Castle Triathlon and Multisport Festival
Get active in the award-winning grounds and surrounding Kent countryside in the discipline of your choice! Recruit your friends and celebrate completing your challenge in the festival village.
- Half Ironman
- Olympic triathlon
- Sprint triathlon 2
- Super sprint triathlon
- Novice triathlon
- + 17 more races

- Sun 5 Oct
- £18-£42
Torbay Triathlon Autumn
A totally traffic free festival of triathlon offering both junior and senior distance options on the English Riviera. Pool swimming along with tarmac cycling and a parkland run, with a great medal.
- Sprint triathlon
- Super sprint triathlon
- Kids triathlon 7
- Novice triathlon
- Fri 29 - Sun 31 Aug
- £149
Junior Long Course Weekend
The Long Course Weekend challenge specifically tailored to junior athletes. Swim on Friday, cycle on Saturday and run on Sunday. Same massive crowds and the same awesome experience!
- 1.2 miles lake swimming
- 56 miles road cycling
- 10 km road running
Kids triathlons near you
Select your location for triathlons for children and juniors in your area.