Brentwood
Triathlon Calendar near Brentwood 2026-2027
Monthly updates for Brentwood
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Brentwood for 2026-2027! We've gathered 13 exciting races in the area. Check out our detailed list below to find your next local race.
September 2026
Small low entry triathlon at the Bridge Development in Dartford offering multiple multi lap race formats including a 1500m Stranded event and shorter GOTri and sprint races.
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.
Midweek Aquathlon at DA1 5PR: 650 m open water swim in the south lake followed by a three lap 5.7 km run, field limited to 40 for water safety.
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.
Willesden Triathlon Club hosts triathlon and aquathlon races at Willesden Sports Centre, featuring a 400 m pool swim and 5 km run, with entries via British Triathlon.
Monthly updates for Brentwood
Get new running races (and updates) in your inbox every month.
Aquathlon at London Fields Lido combining a 400 m pool swim with a 5 km loop around London Fields Common, listed in the Senior London League.
October 2026
Aquathlon at the London Aquatics Centre: a 400 m pool swim followed by a measured 5 km run in Queen Elizabeth Olympic Park, open to ages 15 and over.
May 2027
Pool based triathlon at Tonbridge School Centre on 3 May 2027 offering sprint, standard, aquabike, aquathlon and relay formats.
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.
A community organised event at Sevenoaks Leisure Centre with pool swims, a 25 km bike route through Kent countryside, and runs through Knole park.
June 2027
Club organised BTF sanctioned triathlon at White Oaks Leisure Centre in Swanley on 13 June 2027 offering sprint, standard and aqua bike distances with finisher mementos.
July 2027
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.
August 2027
A multi distance triathlon weekend in London on 21 to 22 August 2027, featuring the 100km T100 plus Olympic, Sprint and Super Sprint distances.