Marathons in Wales
Find your next Marathon race in Wales. Browse upcoming road and trail events below, with dates and locations to help you plan.
26.2 miles, and no two are alike — big-city crowds, quiet country lanes or hilly trails. Marathons book up early and demand months of preparation, so the date matters as much as the place.
16 upcoming Marathon events in Wales
Trelewis, Wales
12 Sep 2026
7 hours, 5K, 11K, Half Marathon, Marathon
Llanberis, Snowdonia
24 Oct 2026
Marathon, Marathon
Talybont-on-Usk, Wales
07 Nov 2026
13 Miles, 13 Miles, 26 Miles, 26 Miles, 49 Miles, 49 Miles
Machen, Wales
28 Nov 2026
14 Miles, 26 Miles
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 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
Dare Valley Country Park, Aberdare, Mid Glamorgan
24 Jan 2027
7 hours, 3K, 5K, 10K, Half Marathon, Marathon, 30.6 Miles, 50K
Dare Valley Country Park, Aberdare, Mid Glamorgan
28 Feb 2027
7 hours, 3K, 5K, 10K, Half Marathon, Marathon, 30.6 Miles, 50K
Brechfa, Wales
13 Mar 2027
13 Miles, 26 Miles
Aberdare, Wales
14 Mar 2027
5K, 10K, Half Marathon, Marathon, 50K
Bute Park, Cardiff
11 Apr 2027
5K, 10K, Half Marathon, Marathon
Tongwynlais, Wales
08 May 2027
13 Miles, 26 Miles
Pistyll, Wales
12 Jun 2027
Marathon
The Wales Marathon, Half Marathon, 10K & 5K
Salterns Car Park, Tenby
04 Jul 2027
5K, 10K, Half Marathon, Marathon
Aberdyfi, Wales
14 Aug 2027
26 Miles, 42 Miles
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