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Running Calendar Wales 2026-2027

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Explore the best running races in Wales for 2026-2027! Our updated list features 317 exciting races across the region. Find your next race in Wales below and join the running community at these great events!

Half Marathons Marathons Trail Runs Triathlons
May 2027
May
9
Su

4 Castles Series

Half Marathon 84 km
May
9
Su

Bryn Meadows Caerphilly 10k

10 km
May
9
Su

Llanelli Agilis Sprint Triathlon

Triathlon Sprint 750 m 26 5 km
May
15-16
Sa - Su

Mid Wales Road

Multisport Olympic 2 23 5 km Full distance 4 46 10 km
May
15
Sa

Race for Life Pretty Muddy Swansea

Obstacle Run 5 km
Monthly updates for Wales

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May
15
Sa

OTT Marathon

Trail Run 10 mi 26 mi
May
15
Sa

Gwyn Matthews’ Rhondda Rollercoaster

Trail Run 16 mi 27 mi
May
16
Su

Barry Island 10K

10 km
May
16
Su

Race for Life Swansea

10 km
May
20-29
Th - Sa

HYROX Cardiff

Fitness
May
23
Su

Anglesey Bridge 10K

10 km
May
23
Su

Anglesey Half Marathon

10 km 13 mi
May
23
Su

Margam Wild Trail Runs

Trail Run 5 km 10 km Half Marathon
May
23
Su

Swansea Triathlon

Triathlon Sprint 750 m 20 5 km
May
23
Su

The Swansea 5K

5 km
May
29
Sa

Welsh Festival of Running

Trail Run 5 km 10 km ... 50 km 80 mi
May
29
Sa

Heart of Wales Line (HOWL)

Trail Run 16 mi 26 mi 50 mi
May
30
Su

Newtown 10K Run

10 km
May
30
Su

Race for Life Llanelli

10 km
June 2027
Jun
4
Fr

Pegasus - The VOGUM

Trail Run
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