5
Trail Half marathons in Wales in Winter
Find trail half marathons in Wales in Winter - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
Filter by date
Filter by place
Filter by category
MapEvent listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- 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
- Sat 24 Jan 2026
- £33-£35
Aberdare, Mid Glamorgan, UK
Spice Up Your Run - Wales | Half Marathon
If you're looking to spice up your run or you need some running like you've never needed running before, then this is the event for you!
- Enter online
- Age 17 & over
- 13.1 miles trail running + 1014 ft ascent
- 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
- Sat 28 Feb 2026
Haverfordwest, Pembrokeshire, UK
Ras Dewi Sant | Half Marathon
- 13.1 miles trail running