Half Marathons in Wales
Find your next Half Marathon race in Wales. Browse upcoming road and trail events below, with dates and locations to help you plan.
At 13.1 miles, the half marathon is the UK's favourite endurance goal — a proper challenge that still fits around normal life. Popular halves fill up months ahead, so it's worth planning early.
33 upcoming Half Marathon events in Wales
Cilcain, Wales
12 Sep 2026
Half Marathon
Trelewis, Wales
12 Sep 2026
7 hours, 5K, 11K, Half Marathon, Marathon
13 Sep 2026
Half Marathon
Llanwrda, Wales
20 Sep 2026
6.5 Miles, 6.5 Miles, 13 Miles, 13 Miles
Deiniol Shopping Centre, Bangor
04 Oct 2026
10K, 10K, Half Marathon, Half Marathon
Cardiff Castle, Cardiff, South Glamorgan
04 Oct 2026
Half Marathon
Tywyn, Wales
17 Oct 2026
Half Marathon
Bute Park, Cardiff, Cardiff
01 Nov 2026
1.5K, 5K, 10K, Half Marathon
Talybont-on-Usk, Wales
07 Nov 2026
13 Miles, 13 Miles, 26 Miles, 26 Miles, 49 Miles, 49 Miles
Afan Forest Trail Half Marathon & 10K
Bryn Bettws Lodge, Afan Forest Park
14 Nov 2026
Half Marathon
Tretower, Wales
05 Dec 2026
10 Miles, Half Marathon
Serious Santa - A War of Attrition -
Llangynidr, Powys
05 Dec 2026
14K, 10 Miles, Half Marathon
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
Nightmare before Xmas Trail ½ Marathon
Aberkenfig, Wales
19 Dec 2026
Half Marathon
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
Chepstow Running Festival January
Chepstow Racecourse, Chepstow
24 Jan 2027
5K, 10K, Half Marathon
Dare Valley Country Park, Aberdare, Mid Glamorgan
24 Jan 2027
7 hours, 3K, 5K, 10K, Half Marathon, Marathon, 30.6 Miles, 50K
31 Jan 2027
5K, 10K, Half Marathon
Tudweiliog, Wales
28 Feb 2027
Half Marathon
Found 33 running events
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