Merthyr Mawr
Triathlon Calendar near Merthyr Mawr 2026-2027
Monthly updates for Merthyr Mawr
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Merthyr Mawr for 2026-2027! We've gathered 9 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.
May 2027
Sprint-distance triathlon in Llanelli with a 750 m open water swim, 26 km bike and 5 km run; includes relay entries and forms part of the Llanelli Multi-Sport Festival.
A city-centre sprint triathlon in Swansea with a 750 m dock swim, flat 20 km bike over three laps and a 5 km waterfront run.
July 2027
IRONMAN 70.3 Swansea in Swansea Bay features a swim from Prince of Wales Dock, a flat coastal bike and a run through the city waterfront; relay entries available.
August 2027
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.
Monthly updates for Merthyr Mawr
Get new running races (and updates) in your inbox every month.
September 2027
Sea swim in Mumbles Bay, a hilly bike around the Gower Peninsula and a flat seafront run; Olympic and Sprint distances available on 04 September 2027.
Sprint duathlon in Mumbles, Swansea on 04 September 2027 featuring a 5k run, 32k bike and 5k run, entry from £75 and GPX course files available.
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 coastal sprint triathlon in Minehead featuring a 750 m open water swim, a 20 km out and back bike route towards Porlock, and a 5 km seafront and trail run, with individual and mixed relay entries and optional medal and t shirt packs.