East of England
Triathlon Calendar East of England 2026-2027
Monthly updates for East of England
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Explore the best triathlons in East of England for 2026-2027! Our updated list features 21 exciting races across the region. Find your next race in East of England below and join the running community at these great events!
July 2026
Multisport races at Gosfield Lake Resort include standard and sprint triathlons, aquabike, aquathlon, duathlon and a 1500m swim with chip timing and category trophies.
August 2026
A triathlon festival in St Neots on 8 August 2026 featuring full and half distance triathlons plus aquabike options, a festival village with music and food, on site camping, and finisher medals and shirts.
Part of the ATW First To Full Festival on 8 August 2026 in Riverside Park, St Neots, this event offers sprint and standard triathlons, aquabike and relay options with an open-water swim in the River Ouse.
A multisport festival at Riverside Park on 8 August 2026 where entrants choose distances from sprint to full, with triathlon, aquabike, relays and a 12 hour endurance run. The day includes live entertainment, family attractions and on site camping.
A Bedford Harriers triathlon in the town centre with Olympic and Sprint options, a new 2025 Sprint bike route via Hill Foot, and river-side two-lap run.
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.
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.
ATW St Neots Triathlon on 20 September 2026 at Riverside Park combines a River Ouse swim, scenic bike and riverside run across distances from Super Sprint up to a new Middle Distance with relay options and wetsuit hire available.
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
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.
May 2027
A triathlon event at Hanningfield Reservoir with sprint and standard distances, aquabike races and an open water swim. Live chip timing, free parking and finishers receive a medal, merchandise and a snack.
Four person team relay triathlon at Box End Lakes featuring a 350 m swim, 7.7 km bike and 1 km run per athlete. Teams can enter in Olympic mixed, female or open categories and single entries may be allocated to teams on race day.
A 100 km triathlon at Box End Lakes on 23 May 2027 with a 2.2 km swim, 81 km non draft bike and a 20 km off road run. Aquabike and team relay options are available, with camping and free parking on site.
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
A multisport weekend at Holkham Hall in Wells next the Sea, Norfolk on 4 to 5 July 2026 featuring a middle distance triathlon, aquabike, gravel sprint, 10 km run and youth races, plus on-site camping and an event village for spectators.
A five-distance triathlon at Hitchin Outdoor Pool with pool swims, closed roads cycling and a flat run finishing at Butts Close.
A coastal triathlon in Southend-on-Sea offering sprint, standard, aquabike, relay and duathlon options with chip timing, water safety cover and a marked course. The event includes marshals, a secure transition area and a bespoke medal.