Trail Half marathons in North Wales
Find trail half marathons in North 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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- Sun 12 Apr
- £33.50
Summit 2 Sea - The Offa's Dyke Half Marathon
Gather on the summit of Moel y Parc at over 1300ft and follow the Offa's Dyke National Trail to the coast to finish line on the beach at Prestatyn.
- Beginner-friendly
- Enter online
- Hilly
- Event village
- Rural
- Coast
- Mountains
- Age 17 & over
- 13.8 miles trail running + 2450 ft ascent
- Sun 12 Jul
- £44.99-£49.99
Snowdonia Trail Half Marathon Eryri
Wales' spectacular mountain half marathon! A tough route with over 1,192m of ascent, most of which is up Wales’ highest peak, with incredible views all the way to Anglesey and a downhill finish too.
- Chip timing
- Enter online
- Mountainous
- Age 17 & over
- 12.9 miles trail running + 3959 ft ascent
- Sun 1 Nov
- £39.99-£51.99
Anglesey Trail Half Marathon
Anglesey's most beautiful trail half, set in the stunning surroundings of Newborough Forest and Traeth Llanddwyn, which once hosted the Commonwealth Mountain and Ultra Distance Running Championships.
- Chip timing
- Enter online
- Age 18 & over
- 21.1 km trail running + 159 m ascent
- Sun 1 Mar
St Davids Day Celebration North Wales Pilgrims Half Marathon | Half Marathon
- 21 km trail running
- Sat 4 Apr
Aberdyfi Half Marathon | Half Marathon
- 21.1 km trail running + 850 m ascent