Mumbles
Triathlon Calendar near Mumbles 2026-2027
Monthly updates for Mumbles
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Mumbles for 2026-2027! We've gathered 7 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.
April 2027
A mixed trail and road duathlon at the National Botanic Garden of Wales with two 5 km runs and a 30 km road cycle loop through Carmarthenshire countryside.
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 on July 11, 2027 combines a swim from Prince of Wales Dock, a coastal flat bike course and a run through Swansea city and the waterfront.
Monthly updates for Mumbles
Get new running races (and updates) in your inbox every month.
September 2027
Sea swim in Mumbles Bay followed by a hilly bike around the Gower Peninsula and a fast flat seafront run on 26 September 2026; Olympic and Sprint options, entries closed.
Mumbles Duathlon on 26 September 2026 is an end of season sprint event featuring a 5k run, 32k bike and 5k run; entries for 2026 are closed.