UK Triathlons
From first-timers to experienced triathletes, our UK Triathlon team is showing what’s possible when people come together for a great cause. Every swim, ride, and run helps fund vital arthritis research.
Swim, cycle, run for Arthritis UK
Ready to swim, cycle, and run for a great cause? Take on a UK Triathlon and help fund life-changing arthritis research. Whether you're a first-timer or a seasoned triathlete, every mile you cover helps make a difference.
Join Team Arthritis, challenge yourself, meet amazing people, and have fun along the way. Pick your event, set your fundraising goal, and get ready to cross that finish line.
Adult UK Triathlons
Saturday 11 July 2026
Take on the York Triathlon. Start with a heated indoor swim, continue on a flat, multi-lap bike course, and finish with a run.
Sunday 16 August 2026
Take on the York Triathlon. Start with a heated indoor swim, continue on a flat, multi-lap bike course, and finish with a run.
Sunday 4 October 2026
Join the Warwickshire Triathlon in historic Stratford-upon-Avon, featuring an indoor swim, scenic bike, and fun run.
Sunday 20 September 2026
Take on the North West Triathlon with a scenic swim, fast cycle, and enjoyable run. With distances for all abilities.
Kids UK Triathlons
Saturday 1 August 2026
The Birmingham Kids Fun Triathlon is a friendly, non-competitive event where children swim, cycle, and run. It promotes fitness, confidence, and fun, with supportive marshals ensuring a safe experience.
Saturday 15 August 2026
The York Kids Triathlon is a fun, non-competitive event where children swim, cycle, and run. With friendly marshals and a lively atmosphere, it encourages fitness, confidence, and making new friends.
Saturday 5 September 2026
The Alderford Kids Fun Triathlon is a friendly, non-competitive event where children swim, cycle, and run. It promotes fitness, confidence, and fun, with supportive marshals ensuring a safe experience.
Saturday 5 June 2027
The Henley Kids Fun Triathlon is a friendly, non-competitive event where children swim, cycle, and run. It promotes fitness, confidence, and fun, with supportive marshals ensuring a safe experience.
You may also be interested in...
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Runs
Run for Arthritis UK: Power through world-famous marathons or 5Ks in gorgeous city parks - pull on your trainers and support arthritis research.
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Walks and treks
Walk for Arthritis UK - choose from stunning coastal paths to countryside rambles to fundraise for arthritis research.
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Swims
Make waves for Arthritis UK: Join sponsored swims in beautiful locations and help support life-changing arthritis research.