2
Marathons in Gwynedd
Find marathons near me in Gwynedd for 2025/2026 - search by date or place, display on a map or use the advanced search to find your perfect race.
Search by month
Search by place
Events near me
Click an event for full event details, location, route, sustainability, what's included and how to enter.
- Sat 12 Jul
- £57.99-£61.99
- Sat 12 Jul
- £57.99-£61.99
Caernarfon, Gwynedd, UK
XTERRA Snowdonia Trail Marathon Eryri
The most epic trail marathon in Wales! Iconic and spectacular trails, circumnavigating then climbing the slopes of Wales' highest peak - Yr Wyddfa (Snowdon).
- Chip timing
- Enter online
- Mountainous
- Age 18 & over
- 27.3 miles trail running + 1685 m ascent
- Sat 19 Apr
Aberdyfi, Gwynedd, UK
Dyfi X Half & Full Marathon | Full Marathon
- 26.2 miles trail running