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Trail runs in South Wales in December 2025
Find trail runs near me in South 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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- Sat 20 Dec
- £9
Aberdare, Mid Glamorgan, UK
Santa Run Wales | 2.5K
Get your Santa suits, reindeer antlers, and elf ears ready — Christmas is coming, and so is the most magical 2.5K fun run of the year!
- Enter online
- Fancy dress
- All ages
- 2.5 km trail running
- Sat 20 Dec
- £9
Aberdare, Mid Glamorgan, UK
Santa Run Wales | 5K
Get your Santa suits, reindeer antlers, and elf ears ready — Christmas is coming, and so is the most magical 5K fun run of the year!
- Enter online
- Traffic free
- All ages
- 5 km trail running
- Sat 13 Dec
Grecynon, Mid Glamorgan, UK
Celtic Trail Races | Ultra
- 34 miles trail running + 5194 ft ascent
- Sat 13 Dec
Grecynon, Mid Glamorgan, UK
Celtic Trail Races | Marathon
- 26 miles trail running + 3050 ft ascent
- Sat 13 Dec
Neath, West Glamorgan, UK
Celtic Trail Races | Half Marathon
- 13 miles trail running + 2200 ft ascent