Cardiff Bay
Triathlon Calendar near Cardiff Bay 2026-2027
Monthly updates for Cardiff Bay
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Cardiff Bay for 2026-2027! We've gathered 11 exciting races in the area. Check out our detailed list below to find your next local race.
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.
Sprint triathlon at Newport International Sports Village with a 400 m pool swim, 22.5 km flat road bike and 5 km flat run, open to competitors aged 15 and over.
May 2027
TriCheddar offers sprint and super sprint triathlons at Cheddar Gorge on 16 May 2027, with pool swims, signposted bike routes and an out-and-back run on the Strawberry Line.
June 2027
Pool-based triathlon at Caldicot Leisure Centre on 26 June 2027 with traffic-free grass cycle and run circuits, multiple distance options and a team relay.
July 2027
A run-and-swim event around Clevedon Marine Lake on 17 July 2027, offering full and half distances with chip timing and on-course safety provisions.
Monthly updates for Cardiff Bay
Get new running races (and updates) in your inbox every month.
Sprint triathlon in Clevedon on 18 July 2027 featuring a 750 m marine lake swim, 20 km coastal bike and 5 km two-lap run along the seafront.
August 2027
Triathlon around Bristol Harbour with swim in Cumberland Basin, closed road bike and run, Sprint and Standard options plus Aquabike and relay entries.
Sprint triathlon in Barry, Wales on August 15, 2027 with a 750 m swim, a mapped bike course and a 5 km run; entries open soon.
A memorial triathlon at Ebbw Vale Sports Centre on 22 August 2027 offering Super Sprint, Relay and youth TriStar races with accessible facilities.
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.
October 2027
A BTF permitted sprint triathlon in Minehead with a 750 m sea swim, 20 km bike and 5 km coastal run, chip timing and on‑water safety cover.