4
Half marathons in Wales in December 2025
Find half marathons near me in Wales in December 2025 - filter by date or location, display on a map or use the advanced search to find your perfect race.
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- Sun 7 Dec
- £31.50
Prestatyn, Clwyd, UK
Sea 2 Summit | Offa's Dyke Half Marathon
The only way is up with this race along the Offas Dyke footpath. The scenery and terrain become more and more beautiful, and challenging as you go!
- Chip timing
- Enter online
- Age 17 & over
- 13.1 miles trail running
- Sun 21 Dec
- £27-£40
Aberdare, Mid Glamorgan, UK
A Christmas Carol Bobble Hat Run | Wales | Half Marathon
Welcome to a 7-hour timed running event where you can run a half marathon at your own pace on an out-and-back route, with fuel stations each lap, and a bobble hat, medal and goody bag at the finish.
- Enter online
- Age 17 & over
- 13.1 miles road running
- Sat 6 Dec
Crickhowell, Powys, UK
Secret Santa Figgy Pud 14K, Turkey Ten Mile & Half Marathon Du Mulled Wine | Half Marathon Du Mulled Wine
- 13.82 miles trail running + 4013 ft ascent
- Sat 13 Dec
Neath, West Glamorgan, UK
Celtic Trail Races | Half Marathon
- 13 miles trail running + 2200 ft ascent