Relay triathlons in UK in May 2026
Find relay triathlons near me in UK in May 2026 - search by date or place, display on a map or use the advanced search to find your perfect race.
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Click an event for full event details, location, route, sustainability, what's included and how to enter.

- Sat 9 May 2026
- £195-£225
- Sat 9 May 2026
- £195-£225
THE ROC WALES
The totally unique ROC format, from Abersoch Bay to the top of Wales’ highest mountain and back. Swim, Bike, Mountain, Bike, Run; THE ROC WALES is triathlon - tough and redefined.
- Recycling
- Plastic bottle free
- Entertainment
- Music
- Chip timing
- Enter online
- Hilly
- Mountainous
- Event village
- Event expo
- Coast
- Mountains
- Sustainability policy
- Plastic-free event
- Age 18 & over
- 1.5 km sea swimming
- 100 km road cycling
- 13 km multi terrain running + 3330 ft ascent

- Sat 16 May 2026
- £42.50-£102.50
- Sat 16 May 2026
- £42.50-£102.50
Keswick Mountain Festival | Sprint Triathlon
One of the most thrilling triathlons in the country on a super-exciting route with challenging ascents, descents and open roads, narrow in parts. Includes Full Weekend Festival Ticket in the price!
- Newcomers
- Chip timing
- Hilly
- Event village
- Age 15 & over
- 400 m lake swimming
- 18 km road cycling
- 5 km trail running

- Sun 17 May 2026
- £82-£84
- Sun 17 May 2026
- £82-£84
Roadford Lake Triathlon | Standard
This triathlon returns for another successful year! It’s a superb swimming venue with quiet rolling roads for the bike course and a cracking run too. Plus there's lakeside camping available too.
- Chip timing
- Enter online
- Undulating
- Age 17 & over
- 1500 m lake swimming
- 46 km road cycling + 4245 ft ascent
- 10 km road running + 1644 ft ascent

- Sun 24 May 2026
- £73-£99
- Sun 24 May 2026
- £73-£99
ATW Box End Sprint Triathlon
Stunning watersports venue with immaculate water quality, scenic run route, custom designed medal plus team relay option.
- Enter online
- Age 15 & over
- 750 m lake swimming
- 26 km road cycling + 558 ft ascent
- 5 km road running + 85 ft ascent

- Sun 24 May 2026
- £94-£115
- Sun 24 May 2026
- £94-£115
ATW Box End Standard Triathlon
Stunning watersports venue with immaculate water quality, scenic run route, custom designed medal plus team relay option.
- Enter online
- Age 17 & over
- 1500 m lake swimming
- 40 km road cycling + 837 ft ascent
- 10 km road running + 170 ft ascent

- Sun 24 May 2026
- £120-£135
- Sun 24 May 2026
- £120-£135
ATW Box End Centurion 100km Triathlon
Challenge yourself to tackle a 100km Centurion this year, a distance made popular by the PTO race series. Ideal if you're training for a 70.3 Half-Iron or taking a step up from Standard Distance Tri.
- Enter online
- Undulating
- Age 18 & over
- 2250 m lake swimming
- 81 km road cycling + 1674 ft ascent
- 20 km trail running + 340 ft ascent