10
Marathons in Wales
Find marathons near me in Wales for 2025/2026 - search by date or place, display on a map or use the advanced search to find your perfect race.
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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 Jul
- £139
- 7 charities
- Sat 19 Jul
- £139
- 7 charities
Swansea, West Glamorgan, UK
Gower Peninsula Ultra Challenge | Marathon 42K Loop
A classic distance from Penrice Castle on a loop featuring Oxwich Bay and its nature reserve, the stunning Wales Coast Path, picnic at Rhossili, the Gower Way then a celebration and medal!
- Chip timing
- Enter online
- GPS tracking
- Undulating
- Age 18 & over
- 42 km multi terrain running + 900 m ascent
- Sun 7 Dec
- £41.50
- Sun 7 Dec
- £41.50
Prestatyn, Clwyd, UK
Sea 2 Summit | Offa's Dyke Full Marathon
The only way is up with this race along the Offas Dyke footpath. The scenery and terrain become more and more beautiful, and challenging as you go!
- Chip timing
- Enter online
- Age 18 & over
- 26.2 miles trail running
- Sat 17 May
Merthyr Tydfil, Powys, UK
OTT Trail Marathon and 10 Mile Race - Brecon Beacons | Marathon
- 26.2 miles trail running
- Sat 14 Jun
Crickhowell, Powys, UK
Black Mountains 50 & 32 Mile Ultra, Marathon & Half Marathon | Marathon
- 27 miles trail running + 5505 ft ascent