Letchworth Garden Ci..
Triathlon Calendar near Letchworth Garden City 2026-2027
Monthly updates for Letchworth Garden City
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Letchworth Garden City for 2026-2027! We've gathered 21 exciting races in the area. Check out our detailed list below to find your next local race.
August 2026
A long distance triathlon festival on 8 August 2026 at Riverside Park, St Neots, offering full, half and aquabike options with on site camping and a festival hub.
Triathlon at Riverside Park St Neots on 8 August 2026 offering sprint, standard, aquabike and relay formats as part of the First To Full festival.
A multisport festival at Riverside Park offering sprint to full triathlon options, relay racing, a 12 hour endurance run and family-friendly entertainment.
Bedford Triathlon in Bedford offers Olympic and Sprint categories, a local TT-style bike route with a Hill Foot climb, and a riverside two-lap run.
September 2026
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.
A closed-road triathlon at Willen Lake offering Sprint and Standard distances, plus aquabike and relay options. The event features calm open water, a traffic-free bike course and a flat lakeside run.
Riverside triathlon in St Neots on 20 September 2026 offering sprint to middle distances, open water swim, camping, wetsuit hire and relay options.
Multi-distance triathlon at Emberton Country Park on 2 August 2026, with Middle, Standard and Sprint races plus aquabike, aquathlon and bike-run options.
Multi-sport events at Willesden Sports Centre featuring a 400 m pool swim with 10 km bike and 5 km run options; entries for the September triathlon go via British Triathlon.
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.
Duathlons and 5km and 10km trail runs in Salcey Forest on 25 October 2026 with fully off road routes and live chip timing.
May 2027
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 five-distance triathlon at Hitchin Outdoor Pool with pool swims, closed roads cycling and a flat run finishing at Butts Close.
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.