Knebworth
Triathlon Calendar near Knebworth 2026-2027
Monthly updates for Knebworth
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Explore the top triathlons near Knebworth for 2026-2027! We've gathered 18 exciting races in the area. Check out our detailed list below to find your next local race.
July 2026
London T100 Triathlon takes place 25 to 26 July 2026 at ExCeL London and offers multiple distances from Super Sprint to the 100km triathlon. Water temperature is 18 to 24°C with wetsuits mandatory and several races are sold out.
August 2026
Multi-distance triathlon day at Emberton Country Park featuring middle, standard and sprint formats plus aquabike, aquathlon and relay options.
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.
SPRINT Superhero Tri is a short multisport challenge with a 150 m swim, 3 km bike and 1 km push/run. Entries can be solo, relay, or pulling a Superhero; everyone on course must be registered and receives a medal, T shirt and Super Kit Bag.
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.
A community duathlon on Hampstead Heath combining swims across the ponds and short runs, held on 30 August 2026. Individuals and teams of three to five can enter, and some proceeds support local breast cancer rehabilitation programmes.
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.
A community duathlon at Nettleden Lodge near Berkhamsted with a 6 km run, 24 km cycle and another 6 km run. Individual and relay entries are accepted and all funds raised are donated to three 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.
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.
October 2026
A swim and run event at London Aquatics Centre and Queen Elizabeth Olympic Park on 31 October 2026, featuring a 400 m pool swim and a measured 5 km park run, with chip timing, race photos and a themed medal.
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.
July 2027
A five-distance triathlon at Hitchin Outdoor Pool with pool swims, closed roads cycling and a flat run finishing at Butts Close.