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Running Calendar near Merthyr Tydfil 2026-2027

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Explore the top running races near Merthyr Tydfil for 2026-2027! We've gathered 124 exciting races in the area. Check out our detailed list below to find your next local race.

Half Marathons Marathons Trail Runs Triathlons
September 2026
Sep
19
Sa

Trails & Tarmac Backyard Ultra

Trail Run Backyard Ultra 4 mi 32 mi
Sep
19
Sa

Fan Brycheiniog

Trail Run 16 km
Sep
20
Su

Swansea Bay 10K

10 km
Sep
20
Su

Pumsaint Trail Half Marathon

Trail Run 7 mi 13 mi
Sep
20
Su

Porthkerry 5MT

Trail Run 5 mi
Monthly updates for Merthyr Tydfil

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Sep
20
Su

Castle 2 Castle

11 mi
Sep
26
Sa

Gower Coastal Trail Races

Trail Run 23 mi 34 mi 50 mi
Sep
26
Sa

Mumbles Triathlon

Triathlon Sprint 750 m 32 5 km Olympic 1500 m 42 10 km
Sep
26
Sa

Mumbles Duathlon

Duathlon Sprint 5 32 5 km
Sep
26
Sa

MacTuffX Swansea

Fitness
Sep
26
Sa

Guto Nyth Bran

Trail Run 10 km
Sep
26
Sa

MCTF Run The Track - Swansea

5 km 10 km
Sep
27
Su

RTT Margam Trail 10K

Trail Run 5 km 10 km
October 2026
Oct
3
Sa

The Hateful 8 Loopy Ultra

Trail Run Backyard Ultra
Oct
3
Sa

Saturn Running - Aberdare

Road Race Trail Run Backyard Ultra 3 km 5 km ... Marathon 50 km
Oct
3
Sa

Fan Fawr

Trail Run 3 km
Oct
4
Su

Cardiff Half Marathon

Half Marathon
Oct
4
Su

Red Warrior Annual Multi Terrain Races

Trail Run 5 km 10 km 20 km 60 km
Oct
4
Su

Tonyrefail Aquathlon

Aquathlon Tonyrefail Aquathlon 400 m 5 km
Oct
9
Fr

Light Up the Lake

10 km
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