Trail 10K runs in South Wales
Find trail 10k runs in South Wales in 2025/2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
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- Sat 22 Nov
- £22-£27
Smurf Run | Wales | 10K
Come and join the day of running and aim to complete a 10K at your own pace on a scenic course then receive a fantastic Smurf-themed medal and goody bag at the finish!
- Enter online
- Traffic free
- Age 16 & over
- 10 km trail running + 0 ft ascent
- Sat 24 Jan 2026
- £22-£27
Spice Up Your Run - Wales | 10K
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 16 & over
- 10 km trail running + 249 ft ascent
- Sun 1 Mar 2026
- £22-£27
St Davids Day Dragon Run | 10K
Come and get involved in the second St David's Day Dragon Run in the beautiful Dare Valley Country Park in, of course, Wales!
- Enter online
- Age 16 & over
- 10 km trail running
- Sun 26 Apr 2026
- £22-£27
The Nearly But Not Quite London Marathon - Wales | 10K
Didn't get a ballot entry into The London Marathon 2026? Don't panic, come and run with Saturn Running instead!
- Enter online
- Age 16 & over
- 10 km trail running + 0 ft ascent
- Sat 18 Oct
Afan forest Half Marathon and 10K | 10K
- 10 km trail running
- Sat 8 Nov
EnduranceLife - Gower | 10K
- 10 km trail running + 583 ft ascent
- Sat 15 Nov
Margam Park Trail Races | 10K
- 10.2 km trail running + 420 m ascent
- Sat 11 Apr 2026
RTT Gower Trail Half Marathon & 10K | 10K
- 10 km trail running