Triathlons in UK in Summer
Find triathlons in UK in Summer - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
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- Sat 8 Aug
- £145-£285
ATW Odyssey Triathlon
Complete your own Odyssey on a journey of self-discovery in the Cambridgeshire countryside featuring a swim in the River Ouse, a scenic ride and a run around the beautiful town of St Neots.
- Ironman
- Half Ironman
- Sat 8 Aug
- £67-£119
ATW St Neots Triathlon | Race 2
Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a triathlon or aquabike event of your choice.
- Sprint triathlon
- Olympic triathlon
- Standard aquabike
- Sprint aquabike
- Sat 8 Aug
- £58-£120
Dorney Triathlon | August
Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sat 8 Aug
- £56-£285
ATW First To Full Triathlon Festival
Be part of a UK first. This isn’t just another triathlon—it’s the first event of its kind where you decide the distance, from sprint to full, and race your way.
- Sprint triathlon
- Olympic triathlon
- Half Ironman
- Ironman
- Sprint aquabike
- + 4 more races
- Sun 16 Aug
- £59-£99
ATW Oundle Triathlon
ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Triathlon! It doesn’t matter if you are an experienced triathlete or this is your very first attempt at swim-bike-run.
- Super sprint triathlon
- Sprint triathlon
- Sprint aquabike
- Sun 16 Aug
- £32-£39
ATW Oundle Children’s Triathlon
A fun, friendly and fully supported triathlon for children of all abilities — perfect for first-timers looking to experience the thrill of swim, bike and run in Oundle.
- Kids triathlon 5
- Sat 22 Aug
- £250
THE RESTLESS Gravel XTRI
Take on a wild Scottish adventure combining a cold-water loch swim, epic gravel ride and tough mountain run through the breathtaking landscape of the Arrochar Alps.
- 1.8 km lake swimming
- 50 km gravel riding + 2000 m ascent
- 25 km fell running + 1200 m ascent
- Wed 26 Aug
- £58-£78
Midweek Dorney Triathlon | August
Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- Super sprint triathlon
- Sprint triathlon
- Sprint aquabike
- Sun 30 Aug
- £69-£260
Wimbleball Triathlon
A superb triathlon venue which hosted Ironman 70.3 for ten years! Experience dramatic hills, pristine open water and wild Exmoor scenery in a tough, rewarding multisport challenge of your choice.
- Olympic triathlon
- Half Ironman
- Ironman
- Standard aquabike
- Standard aquathlon
- Sat 20 Jun
- £35-£85
Bowood House Triathlon
- Sprint triathlon
- Super sprint triathlon 2
- Kids triathlon 3
- Sun 28 Jun
- £10-£20
The Brentwood Try-a-Tri
- Kids triathlon 4
- Super sprint triathlon
- Super sprint duathlon 2
- Novice triathlon 2
- Kids duathlon
- Sat 4 - Sun 5 Jul
- £25-£105
Woodhorn Museum Triathlon
- Lake swim 3
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- + 2 more races
- Sun 12 Jul
- £45-£179
Eastbourne Triathlon and Multisport Festival
- Super sprint triathlon
- Kids triathlon
- Sprint triathlon
- Olympic triathlon
- Charity swim
- + 3 more races
- Sun 19 Jul
- £55-£70
Compton Verney Sprint Triathlon
- Sprint triathlon
- Relay triathlon
- Sun 19 Jul
- £175
On The Edge Middle Distance Triathlon
- 1.9 miles lake swimming
- 56 miles road cycling
- 13.1 miles trail running
- Sun 2 Aug
- £20
Sri Chinmoy Try-a-Tri
- 200 m pool swimming
- 10 km road cycling
- 3 km trail running
- Sat 29 Aug
- £15-£85
Staffin Triathlon and 10K
- Kids triathlon 4
- Novice triathlon
- Super sprint triathlon
- Sprint triathlon
- 10K run