Relay triathlons in UK in May 2026
Find relay triathlons in UK in May 2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
Filter by date
Filter by place
MapEvent listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sat 2 May 2026
- £58-£120
Dorney Triathlon | May
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.
- Recycling
- Newcomers
- Event village
- Park
- Sustainability policy
- Age 15 & over
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sun 3 May 2026
- £55-£117
ATW St Neots Triathlon | Race 1
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.
- Newcomers
- Event village
- Park
- Age 15 & over
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Standard aquabike
- Sat 9 May 2026
- £250-£270
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
- £78-£178
ATW Big East & Maldon Triathlon
The Big East and Maldon Triathlon is brought to you by the largest triathlon organiser in the UK! A great experience featuring a tidal river swim.
- Newcomers
- Event village
- Park
- Age 15 & over
- Sprint triathlon
- Olympic triathlon
- Standard aquabike
- Half Ironman
- Middle aquabike
- Sat 16 May 2026
- £42.50-£107.50
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
- Enter online
- Hilly
- Event village
- Age 15 & over
- 400 m lake swimming
- 18 km road cycling
- 5 km trail running
- Sun 17 May 2026
- £68-£135
Roadford Lake Triathlon
Triathlon and swim events at Roadford Lake, offering a range of distances to suit all ability levels in a safe environment, with camping options to enjoy the area after your event.
- Families
- Trees not tees
- Recycling
- Newcomers
- Event village
- Rural
- Sustainability policy
- Plastic-free event
- Age 15 & over
- Sprint triathlon
- Olympic triathlon
- Half Ironman
- Sun 24 May 2026
- £65-£137
ATW Box End Triathlon
Experience a choice of multi-sport events — triathlon, relay triathlon and aquabike — at a stunning watersports venue with pristine water, scenic routes, a custom medal and more.
- Newcomers
- Event village
- Park
- Age 15 & over
- Sprint triathlon
- Sprint aquabike
- Olympic triathlon
- Standard aquabike
- Half Ironman
- + 1 more race
- Sun 3 May 2026
Horwich Triathlon & Multisport
- Sprint triathlon
- Olympic triathlon
- Sprint duathlon
- Standard duathlon
- Sprint aquathlon
- + 3 more races
- Sat 23 May 2026
ATW Box End Mixed Team Relay
- 350 m lake swimming
- 7.7 km road cycling + 102 ft ascent
- 1 km road running + 0 ft ascent