Merthyr Tydfil
Triathlon Calendar near Merthyr Tydfil 2026-2027
Monthly updates for Merthyr Tydfil
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Merthyr Tydfil for 2026-2027! We've gathered 13 exciting races in the area. Check out our detailed list below to find your next local race.
August 2026
Multiple triathlon and aquathlon distances at Ebbw Vale Sports Centre, including junior races; proceeds support North Gwent Cardiac Rehabilitation & Aftercare Charity.
Open water aquathlon series in 2026 with three race dates offering sprint, mini sprint and super sprint distances at Secret Bar & Kitchen.
A four race midweek aquathlon series at Parc Bryn Bach held on Thursdays from May to August, featuring open water swims and mandatory wetsuits.
A muddy mini triathlon on 29 August 2026 with a 60 yard bog swim, 2 mile cross country cycle and 1 mile run. Competitors start three minutes apart and entry is £15 with age, gender and fancy dress prizes.
Monthly updates for Merthyr Tydfil
Get new running races (and updates) in your inbox every month.
September 2026
Two days in the Brecon Beacons combining seated SUP, a 47 mile bike, a 13 mile Pen y Fan hike and varied day two activities supporting Ty Hafan and local community groups.
Sea swim in Mumbles Bay, a hilly bike around the Gower Peninsula and a fast seafront run; Olympic and Sprint distances, Ocean Lava qualifier on 26 September 2026.
Sprint duathlon in Mumbles on 26 September 2026: 5 km run, 32 km bike, 5 km run; entry from £75 and GPX course maps available.
October 2026
Experience an end of season sprint triathlon in Porthcawl featuring a harbour swim, a multi lap town cycle, and a flat coastal run along the Bristol Channel.
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.
May 2027
A city-centre sprint triathlon on the Swansea waterfront with a dock swim and flat three-lap bike and 5 km run, entry from £84.99.
July 2027
A coastal IRONMAN 70.3 in Swansea on July 11, 2027 featuring a Prince of Wales Dock swim, a flat coastal bike course and a run through Swansea city and waterfront.
August 2027
Pool-based triathlon at Caldicot Leisure Centre with indoor swim, traffic-free grass cycle and run circuits, multiple distances and relay and youth events.