Trail 10K runs in Wales
Find trail 10k runs in Wales in 2026/2027 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
Filter by place
Filter by date
Filter by category
MapEvent listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sun 26 Apr
- £15-£27
The Nearly But Not Quite London Marathon | Wales | 10K
Didn't get a ballot entry into The London Marathon? Don't panic, come and experience this 10K event instead and earn a fantastic London-themed medal!
- 10 km trail running
- Sat 11 Jul
- £31.99-£37.99
Snowdonia Trail Eryri 10K
A beautiful 10K with something for all runners on a mixture of road, track and trail and takes in the beautiful lower slopes of Yr Wyddfa (Snowdon), with a stunning downhill to the finish line.
- 9.8 km trail running + 1335 ft ascent
- Sat 18 Jul
- £49
Gower Peninsula Ultra Challenge | 10K Loop
A perfect Saturday trail 10K from Penrice Castle on a loop towards Oxwich Bay then back to the event hub for a medal, a picnic lunch and to enjoy the whole Ultra Challenge atmosphere.
- 10 km multi terrain running + 250 m ascent
- Sat 19 Sep
- £23-£25
Abersoch 10K Trail
Take on a stunning coastal 10km trail with rolling climbs, dramatic sea views and a memorable beach finish, complete with chip timing, great support and rewarding prizes.
- 10 km trail running + 500 ft ascent
- Sun 1 Nov
- £28.99-£39.99
Anglesey Trail 10K
Anglesey's most beautiful trail 10K, set in the stunning surroundings of Newborough Forest and Traeth Llanddwyn, which once hosted the Commonwealth Mountain and Ultra Distance Running Championships.
- 10 km trail running + 98 m ascent
- Sat 5 Dec
- £21.50
Alyn Waters Winter Trails | 5K & 10K | 10K Trail
Alyn Waters is a great place for trail running! The country park is accessible, the paths easy to follow and with a variety of terrain, and with a few ups and downs to make you really earn your medal!
- 10 km trail running
- Sun 20 Dec
- £26-£36
The Snow Globe Gallop Bobble Hat Run - Wales | 10K
Come and join in for the Christmas Carol Bobble Hat Run in the picturesque Dare Valley in Wales! At this event you can earn yourself a running buff as well as one of the incredible themed medals!!
- 10 km trail running
- Sat 6 Mar 2027
- £23
Loggerheads Trail 10K
The courses are challenging but the event environment is relaxed and friendly. Runners of all abilities can get involved and enjoy a run out on those fabulous trails.
- 10 km trail running
- Sat 25 Apr
- £35
EnduranceLife - Pembrokeshire | 10K
- 10 km trail running + 1109 ft ascent
- Sat 9 May
- £30
Wild Hybrid Wales - Margam Country Park Solos | 10K Ruck Run
- 10 km trail running
- Sun 10 May
- £21-£23
Llangollen Trail 10K & Kids 1 Mile Race | 10K
- 10 km trail running
- Sun 24 May
- £17.70-£19.70
Treforest 10K
- 10 km trail running + 200 ft ascent