Ultra Marathons in Wales
Find your next Ultra Marathon race in Wales. Browse upcoming road and trail events below, with dates and locations to help you plan.
An ultra is anything beyond the marathon, which covers a lot of ground — from a first 50K to multi-day mountain races. Distance is only half the story here: check the elevation, cut-offs and kit list before you enter.
59 upcoming Ultra Marathon events in Wales
Hay-on-Wye, Wales
30 Oct - 01 Nov 2026
50K, 100K
Talybont-on-Usk, Wales
07 Nov 2026
13 Miles, 13 Miles, 26 Miles, 26 Miles, 49 Miles, 49 Miles
Merthyr Tydfil
07 Nov 2026
30 Miles
Pen Llyn Ultra - Winter Edition
Tafarn y Fic, Llithfaen, Gwynedd, Wales
07 Nov 2026
36 Miles
Trails & Tarmac Backyard Ultra
Crickhowell, Wales
07 Nov 2026
4.167 mile loop each hour
Red Warrior Annual Multi Terrain Races
Margam, Wales
08 Nov 2026
5K, 10K, 20K, 60K
Bangor, Wales
14 Nov - 15 Nov 2026
80K, 80K, 147K, 147K
The Anglesey 3 Peaks 55K Run Challenge
Moelfre, Wales
14 Nov 2026
55K
Sea 2 Summit - Offa's Dyke Half/Full/Ultra
Prestatyn, Wales
06 Dec 2026
Half Marathon, Marathon, 55.5K
Aberdare, Wales
12 Dec 2026
Half Marathon, Marathon, 34 Miles
The 5 Trigs of Trigmas | 24 Hour Ultra Challenge
Maes Carafanau Llanbenwch Caravan Park, Ruthin, Clwyd
12 Dec 2026
70K, 94K
The Snow Globe Gallop Bobble Hat Run | Wales
Dare Valley Country Park, Aberdare, Mid Glamorgan
20 Dec 2026
7 hours, 3K, 5K, 10K, Half Marathon, Marathon, 30.6 Miles, 50K
The Winter Run to the Castle Ultra
Aberdyfi Village Hall, Aberdovey, Gwynedd
16 Jan 2027
27 Miles, 41.88 Miles
Llanberis, Wales
23 Jan 2027
24K, 44K
Dare Valley Country Park, Aberdare, Mid Glamorgan
24 Jan 2027
7 hours, 3K, 5K, 10K, Half Marathon, Marathon, 30.6 Miles, 50K
Trails & Tarmac Backyard Ultra
Crickhowell, Wales
06 Feb 2027
4.167 mile loop each hour
Brecon to Cardiff Xtreme & Taff Xtreme Marathon
Coleg y Cymoedd Nantgarw Campus, Cardiff, Mid Glamorgan
14 Feb 2027
Marathon, 47.5 Miles
Dare Valley Country Park, Aberdare, Mid Glamorgan
28 Feb 2027
7 hours, 3K, 5K, 10K, Half Marathon, Marathon, 30.6 Miles, 50K
Crickhowell, Wales
06 Mar 2027
10 Miles, 20 Miles, 40 Miles
Welshpool, Wales
13 Mar 2027
32 Miles
Found 59 running events
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