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!
August 2026
Two triathlon distances in Bedford town centre on 16 August 2026, with river swims, country bike routes and multi-lap riverside runs.
September 2026
A team relay triathlon in Aldeburgh on 06 Sep 2026 featuring a sea swim, a 22 km bike course and a 5 km off road run with 100 places available.
A community aquathlon at Letchworth Outdoor Pool combining a 400 m pool swim and a 5 km run with junior distances and relay options. Chip timed age group competition, inclusive entries and a 350 participant limit.
A charity triathlon at Blackwater Leisure Centre in Maldon featuring pool swims, rural bike laps and mostly paved runs with proceeds shared with the Stroke Association.
Nettleden Duathlon at Nettleden Lodge near Berkhamsted combines a 6 km run, a 24 km cycle and another 6 km run. It accepts individual entrants and relay teams, includes free kids races, and raises funds for charities.
Monthly updates for East of England
Get new running races (and updates) in your inbox every month.
Trifarm Sprint Triathlon Equinox on 13 September 2026 features a lake swim, an 18 km bike over North Hill and a 5 km perimeter run with a Super Sprint option.
Riverside triathlon in St Neots on 20 September 2026 offering sprint to middle distances, open water swim, camping, wetsuit hire and relay options.
Pool-based super sprint triathlon in Bungay with a 400m swim, 20km bike and 3.2km run, limited to 170 places and open to ages 15 to 99.
ATW Grafham Triathlon at Grafham Water features sprint and standard formats with open water swim loops, a flat out and back bike and a 5 km lap run around the dam. Aquabike and relay options plus wetsuit hire and overnight options are available.
Timed solo swimrun at Grafham Water with repeated 2.5 km laps, two swims and shrinking time limits until the last person remains.
October 2026
Reef Triathlon is a Super Sprint event with a 300 m pool swim, 17 km cycle and 3 km run, scheduled for Sunday 4 October 2026.
Duathlon at Grafham Water on 25 October 2026 with Standard and Sprint distances, a 2.5 km dam lap and an out and back bike route to St Neots. Races are draft illegal and supervised by British Triathlon motor officials.
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.
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.
Team triathlon relay at Box End Lakes with 350 m swim, 7.7 km bike and 1 km run per athlete, offering team and single entry options and on site camping.
A 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 on 23 May 2027 offering Sprint, Standard and Centurion distances. Options include aquabike, two to three person relays, non-draft multi-lap courses and on-site camping.
June 2027
ATW Grafman is a middle distance triathlon at Grafham Water with a 1.9 km swim, 90 km bike and 21 km run plus aquabike and relay options.
July 2027
Multisport weekend at Holkham Hall featuring a middle distance triathlon, aquabike, gravel sprint, 10k and junior races with on site camping.