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Half Marathon calendar Wales 2024-2025

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Explore the best half marathons in Wales for 2024-2025! Our updated list features 35 exciting races across the region. Find your next race in Wales below and join the running community at these great events!

April 2025
Apr
26
Saturday

Endurancelife | Pembrokeshire

Trail Run 10 km 13 mi 26 mi 34 mi
May 2025
May
10
Saturday

Cadair X

Trail Run 13 mi
May
11
Sunday

Snowdonia Half Marathon

21 km
June 2025
Jun
8
Sunday

Swansea Half Marathon

13 mi
Jun
14
Saturday

Limitless Trails - Black Mountains

Trail Run 21 km 42 km 50 km 80 km
Jun
14
Saturday

Black Mountains 50

Trail Run 13 mi 26 mi 32 mi 50 mi
July 2025
Jul
12
Saturday

Xterra Snowdonia Trail Marathon Eryri

Trail Run 10 km 13 mi 26 mi 57 km
Jul
20
Sunday

Wye Valley Tunnel Run

Trail Run 10 km 21 km 42 km
Jul
27
Sunday

Pen Y Fan Challenge

Trail Run 5 mi 13 mi
September 2025
Sep
7
Sunday

Caernarfon Half Marathon

13 mi
Sep
14
Sunday

Lake Vyrnwy Half Marathon

21 km
October 2025
Oct
5
Sunday

Bangor City Half Marathon

10 km 21 km
Oct
5
Sunday

Cardiff Half Marathon

21 km
November 2025
Nov
8
Saturday

Endurancelife | Gower

Trail Run 10 km 21 km 42 km 33 mi
Nov
9
Sunday

Anglesey Trail Half Marathon

Trail Run 10 km 21 km