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Running calendar Wales 2025-2026

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Explore the best running races in Wales for 2025-2026! Our updated list features 140 exciting races across the region. Find your next race in Wales below and join the running community at these great events!

May 2025
May
11
Sunday

Snowdonia Half Marathon

13 mi
May
11
Sunday

Bryn Meadows Caerphilly 10k

10 km
May
14
Wednesday

Rhayader Running Club 5k

5 km
May
15-19
Th - Mo

Severn Challenge

Trail Run 26 mi 29 mi ... 57 mi 59 mi
May
15
Thursday

The Hafren Ultra

Trail Run 27 mi
May
16
Friday

The Severn Plod Ultra

Trail Run 48 mi
May
16-18
Fr - Su

Ultra-Trail Snowdonia by Utmb

Trail Run 25 km 50 km 100 km 168 km
May
17
Saturday

OTT Marathon

Trail Run 10 mi 26 mi
May
21-26
We - Mo

Wild Horse 200 - South Wales 200

Trail Run 200 mi
May
21
Wednesday

SSAFA South East wales Cardiff 5K Series

5 km
May
25
Sunday

Newtown 10K Run

10 km
May
31
Saturday

Abersoch 10K

10 km
May
31
Saturday

Saturn Running - Aberdare

Backyard Ultra 5 km 7 km ... 26 mi 50 km
June 2025
Jun
4
Wednesday

SSAFA South East wales Cardiff 5K Series

5 km
Jun
7
Saturday

Pegasus - The VOGUM

Trail Run 40 mi
Jun
7
Saturday

The Llangollen 50K

50 km
Jun
7
Saturday

Snowdonia in a Day

Trail Run 65 km
Jun
7
Saturday

Conquer Cardiff Summer 5k 10k and Half Marathon

5 km 10 km 13 mi
Jun
7
Saturday

Midnight Mountain Marathon

Trail Run 13 mi 26 mi
Jun
8
Sunday

Swansea Half Marathon

13 mi
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