Trethomas
Triathlon Calendar near Trethomas 2026-2027
Monthly updates for Trethomas
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Trethomas for 2026-2027! We've gathered 13 exciting races in the area. Check out our detailed list below to find your next local race.
October 2026
A pool based triathlon at Freedom Leisure Lydney offering sprint and Olympic distances, secure transition, scenic bike routes and medals for finishers.
A 400m pool swim followed by a 5km flat tarmac run around Tonyrefail Park on 4 October 2026, with marshals, chip timing and accessible facilities.
Sprint triathlon and relay at Porthcawl Harbour with a 750 m swim, four lap bike and two lap coastal run; British Triathlon membership or race pass required.
March 2027
A duathlon at Margam Country Park combining trail runs around the castle and lake with rolling road bike courses featuring short climbs and fast flat sections.
April 2027
Indoor pool based triathlon in Lydney offering sprint and Olympic distances with individual and relay options, secure transition and scenic bike and run routes.
Monthly updates for Trethomas
Get new running races (and updates) in your inbox every month.
May 2027
A sprint and super sprint triathlon in Cheddar Gorge featuring pool swims, a Gorge climb on the bike and an out-and-back run on the Strawberry Line.
June 2027
A middle distance triathlon at Parc Bryn Bach featuring a lake swim, a 60 mile bike through the Brecon moors and a three-lap 13.1 mile run; an aquabike option is available.
Pool based triathlon at Caldicot Leisure Centre on 26 June 2027 with an indoor swim, traffic free grass cycle circuit, multiple distances, relay and kids races.
July 2027
A short swimrun at Clevedon Marine Lake combining about 6 km of running with 1 km of swimming, offered as full or half distances with individual and team entries.
A Clevedon sprint triathlon with a 750 m lake swim, a fast undulating bike loop and a 5 km seafront and trail run finishing at Salthouse Fields.
August 2027
A short T30 triathlon at Lydney Lido on Sunday 1 August 2027 featuring a 400 m swim, 24.5 km bike and 5 km run with a finisher's medal.
ATW Bristol Triathlon at Cumberland Basin combines a harbour swim, closed road bike and riverside run with sprint and standard distances plus aquabike and relay options.
September 2027
Pool-based sprint and Olympic triathlon at Newport International Sports Village with flat bike and run courses, chip timing and medals for all finishers.