Dacorum District
Triathlon Calendar near Dacorum District 2026-2027
Monthly updates for Dacorum District
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Dacorum District for 2026-2027! We've gathered 52 exciting races in the area. Check out our detailed list below to find your next local race.
May 2027
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 with Super Sprint, Sprint, aquabike and relay options on a flat course in an Olympic venue; British Triathlon membership is required.
Pool-based triathlon in Henley-on-Thames with indoor swims, rural cycle laps and grass runs across Sprint, Super Sprint, Fun, relay and CRUK wave options.
Multi distance triathlon at Dorney Lake with swim, bike and run options plus aquabike and relay entries; British Triathlon membership and a race licence are required.
Triathlon at Alexandra Gardens, Windsor on 13 June 2027 with Thames open-water swims, road cycling past Windsor Castle and runs along the Long Walk; sprint, standard and relays.
Monthly updates for Dacorum District
Get new running races (and updates) in your inbox every month.
July 2027
Five-distance triathlon at Hitchin Outdoor Pool and Butts Close, from children's Nano races to the Olympic distance, with timing, t-shirt and finisher medal included.
Midweek Dorney Triathlon at Dorney Lake offers sprint, super sprint, aquabike and relay options on a flat Olympic course; the event is draft illegal.
Marlow Triathlon at Higginson Park on 11 July 2027 offers Middle Distance, Olympic and Sprint races with timed results, race village facilities and charity support for Macmillan.
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.
Teams of three tag through a 750m swim, 23km bike and 5km run at Box End Park, racing in Open, Female and Mixed categories with medals for top teams.
Triathlon at Dorney Lake offers Sprint, Standard and Super Sprint races plus aquabike and team relay on a flat Olympic venue.
Point to point triathlon from Dorney Lake near Windsor to Brighton Sea Front with a lake swim, a long bike through Surrey and a South Downs trail run.
Multi distance family triathlon at Dorney Lake with open water swims, closed road bike laps, junior Tristar races and a Family Fun non competitive option.
Triathlon at Dorney Lake offering Sprint, Standard and Super Sprint races plus aquabike and relay options on a flat lakeside course with British Triathlon membership required.
August 2027
A multi format triathlon at Emberton Country Park offering Middle, Standard and Sprint distances plus aquabike, aquathlon and bike run options.
Triathlon at Dorney Lake with Sprint, Standard and Super Sprint races plus aquabike and relay options on a flat, chip timed course at an Olympic venue.
Bedford Triathlon in Bedford town centre on 15 August 2027 offers Olympic and Sprint races with river swims, country bike routes and multi lap riverside runs.
Sprint-distance triathlon at Thorpe Park: a 750 m lake swim, 20 km bike and 5 km run with chip timing, medal, free park admission and support for Macmillan.
Midweek triathlon at Dorney Lake offering sprint, super sprint, aquabike and relay options on a flat lake and bike and run course; British Triathlon membership or race pass required.