Trail Marathons in Wales
Find trail marathons 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.
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- Sat 24 Jan
- £33-£35
Spice Up Your Run | Wales | Marathon
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! Come and celebrate all things Spice Girls!
- Enter online
- Age 18 & over
- 26.2 miles trail running + 2028 ft ascent
- Sun 1 Mar
- £16-£35
St Davids Day Dragon Run
Come and get involved in the second St David's Day Dragon Run in the beautiful Dare Valley Country Park in, of course, Wales!
- Families
- Beginner-friendly
- Event village
- Park
- All ages
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 26 Apr
- FREE-£35
The Nearly But Not Quite London Marathon | Wales
Didn't get a ballot entry into The London Marathon? Don't panic, come and experience this event instead and earn a fantastic London-themed medal!
- Families
- Beginner-friendly
- Event village
- Park
- All ages
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 12 Jul
- £59.99-£64.99
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 14 Mar
Brechfa Trail Races: Half Marathon & Marathon | Marathon
- 26 miles trail running
- Sat 25 Apr
EnduranceLife - Pembrokeshire | Marathon
- 27.3 miles trail running + 3067 ft ascent
- Sat 9 May
Radyr Trail Races: Half Marathon and Marathon | Marathon
- 26.2 miles trail running