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Trail runs in Gwynedd
Find trail runs near me in Gwynedd for 2025/2026 - filter by date or location, display on a map or use the advanced search to find your perfect race.
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- Fri 5 Sep
- £195-£295
Llanuwchllyn, Gwynedd, UK
The Dee Way 120
This new Ultra distance event urges you to get to know this river and the great, varied country which accompanies it.
- Enter online
- GPS tracking
- Age 18 & over
- 50 hrs trail running
- Sun 9 Nov
Llanfairpwllgwyngyll, Isle of Anglesey, UK
Anglesey Trail Half Marathon & 10K | Half Marathon
- 21.1 km trail running + 544 ft ascent
- Sun 9 Nov
Llanfairpwllgwyngyll, Isle of Anglesey, UK
Anglesey Trail Half Marathon & 10K | 10K
- 10 km trail running + 308 ft ascent
- Sat 15 Nov
Bangor, Gwynedd, UK
Slate Trail Ultra | Slate Trail Ultra
- 145 km trail running + 3900 m ascent
- Sat 15 Nov
Bangor, Gwynedd, UK
Slate Trail Ultra | Ultra Tour of The Quarries
- 88 km trail running + 2700 m ascent
- Sat 4 Apr 2026
Aberdyfi, Gwynedd, UK
Aberdyfi Half Marathon | Half Marathon
- 21.1 km trail running + 850 m ascent