Twickenham
Triathlon Calendar near Twickenham 2026-2027
Monthly updates for Twickenham
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Twickenham for 2026-2027! We've gathered 43 exciting races in the area. Check out our detailed list below to find your next local race.
May 2027
Multisport festival at Dorney Lake on 16 May 2027 featuring triathlon, duathlon, aquabike, open water swims and 5K to 15K runs, entry from £25.
Marlow Triathlon on 30 May 2027 at Higginson Park features open water River Thames swims, cycling through the Chilterns and riverside runs, with medals and chip timing.
Multisport event at Higginson Park in Marlow featuring triathlon, duathlon, aquabike, aquathlon and 750m 1500m 3000m open water swims with chip timed results and finisher medals.
June 2027
Midweek triathlon at Dorney Lake offering Super Sprint, Sprint, Standard, aquabike and relay options on a flat, chip timed course with wetsuit hire available.
Pool swim, rural cycle and grass run in Henley offering Sprint, Super Sprint, fun and charity CRUK Wave options with chip timing and relay entries.
Monthly updates for Twickenham
Get new running races (and updates) in your inbox every month.
Multi-distance triathlon at Dorney Lake with sprint, standard, super sprint, aquabike and relay options on a flat, Olympic-standard course.
Multi distance triathlon at Dartford with lake swims and multi lap bike and run courses, including Standard, Sprint, GO TRI and Aqua Bike formats.
July 2027
Midweek Dorney Triathlon at Dorney Lake offers sprint, super sprint, aquabike and relay options on a flat, chip timed course with wetsuit hire and free parking.
Triathlon at Higginson Park, Marlow on 11 July 2027 offering Middle, Olympic and Sprint distances with a Thames swim and chip timed results.
One on the River Marlow stages triathlon, duathlon, aquabike, aquathlon and open-water swims at Higginson Park beside the River Thames with chip timing and marked courses.
Triathlon at Dorney Lake offering sprint, standard and super sprint distances plus aquabike and relay options on a flat chip timed Olympic course.
Point to point triathlon from Dorney Lake near Windsor to Brighton seafront with a 1.2 mile swim, c. 67 miles bike and c. 14 miles run.
Family oriented triathlon at Dorney Lake on 25 July 2027 with open water swims, flat traffic free bike routes and multiple junior and youth race distances.
Experience a flat and fast triathlon at the iconic Dorney Lake Olympic venue featuring super sprint sprint and standard distances plus relay and aquabike options.
August 2027
A summer multisport event in Henley on Thames with triathlon, duathlon, aquabike, aquathlon and open water swims on the River Thames.
Multi-distance triathlon festival in London on 21-22 August 2027, featuring the 100 km T100 distance plus Olympic, Sprint and Super Sprint options.
SPRINT Superhero Tri is a short multisport challenge with a 150 m swim, 3 km bike and 1 km push/run. Entries can be solo, relay, or pulling a Superhero; everyone on course must be registered and receives a medal, T shirt and Super Kit Bag.
Beginner-friendly triathlon at Surrey Docks with open water swims, static cycling options and flat run routes, focused on community and representation rather than competition.