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.
62 upcoming Ultra Marathon events in Wales
Rhayader, Wales
12 Sep 2026
100 Miles
Tondu, Wales
18 Sep 2026
50 Miles, 100 Miles
Trails & Tarmac Backyard Ultra
Crickhowell, Wales
19 Sep 2026
4.167 mile loop each hour
Mumbles, Wales
26 Sep 2026
23 Miles, 34 Miles, 50 Miles
Red Warrior Annual Multi Terrain Races
Margam, Wales
04 Oct 2026
5K, 10K, 20K, 60K
Dolanog, Wales
10 Oct 2026
32 Miles, 32 Miles
Basingwerk Abbey, Greenfield, Flintshire, Wales
16 Oct - 18 Oct 2026
141 Miles
Race Across Wales - Pilgrims 100km
Porth-y-nant, Llithfaen, Gwynedd, Wales
17 Oct 2026
100K
Green Lane Car Park, Corwen, Clwyd
18 Oct 2026
50K, 50K
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
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
Found 62 running events
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