East of England
Triathlon Calendar East of England 2026-2027
Monthly updates for East of England
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in East of England for 2026-2027! Our updated list features 24 exciting races across the region. Find your next race in East of England below and join the running community at these great events!
March 2027
A spring duathlon in Ely with two 4 km runs and a 26 km bike across a flat fenland course and a former WW2 airfield.
May 2027
Sprint triathlon at Dereham Leisure Centre on 02 May 2027 featuring a 300 m pool swim, 21 km bike and 5 km run alongside a Health and Wellbeing Fair.
Triathlon at Riverside Park, St Neots with Super Sprint, Sprint, Standard, aquabike and relay options, swim in the River Ouse and a bike route through nearby villages.
Sprint triathlon at Hatfield Sports Village with a 400 m pool swim, 20 km bike and 5 km run, including the Herts Club Sprint Championships and non-draft rules.
Multi-discipline event at Hanningfield Reservoir near Chelmsford featuring sprint and standard triathlons, aquabikes and open water swim with live chip timing and free parking.
Monthly updates for East of England
Get new running races (and updates) in your inbox every month.
Team relay triathlon at Box End Lakes with three team categories, a 350 m swim, 7.7 km bike and 1 km run; single entries can be assigned to teams.
A Metric Centurion 100 km triathlon at Box End Lakes on 23 May 2027 featuring a 2.2 km swim, 81 km bike and 20 km offroad run with aquabike and relay options.
Triathlon at Box End Lakes with Sprint, Standard and Centurion distances plus aquabike and relay options on clear lake water and a multi lap course.
A lake-based triathlon in the Chelmer Valley on 23 May 2027 offering Sprint and Super Sprint formats with a hilly 18km bike and laps around the perimeter track.
June 2027
A middle distance triathlon at Grafham Water featuring a 1.9 km swim, 90 km bike and 21 km run, with non-drafting bike rules and aquabike and relay options.
A multi-category triathlon in Norwich organised by Tri-Anglia Triathlon Club, featuring sprint, standard, relay and first-triathlon races with course maps and past results.
Swimrun races of 5k, 10k and 21k at Grafham Water on 27 June 2027 with solo and two-person team entries, marked courses and mandatory safety kit.
July 2027
Multisport weekend at Holkham Hall with a half triathlon, aquabike, gravel sprint, 10 km and junior races plus on site camping and an event village.
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.
Triathlon at Promenade Park Maldon on 4 July 2027 offering middle, standard and sprint distances plus aquabike and relay options.
Multidistance triathlon in Southend on 11 July 2027 with swim, bike and run options plus aquabike, relay and duathlon; chip timing and water safety provided.
Triathlon at Riverside Park St Neots offering Sprint and Standard distances plus aquabike, relay options and on site camping.
Teams of three each complete a 750m swim, 23km bike and 5km run in relay format at Box End Park with categories and prizes for top teams.
Multi-distance triathlon at Felixstowe Leisure Centre on 18 July 2027 with sea and pool swims, cycling through Suffolk and a flat esplanade run.
August 2027
A multisport festival in St Neots on 7 August 2027 offering sprint to full triathlon distances, a 12 hour run, team relays, camping and family activities.