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.
Filter by place
Filter by date
Filter by category
MapEvent listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- 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.
- 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.
- 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.
- 21.1 km trail running + 159 m ascent
- Sun 6 Dec
- £38.50
Sea 2 Summit | Offa's Dyke Half 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!
- 13.1 miles trail running
- Sun 1 Mar
- £36-£42
St Davids Day Celebration North Wales Pilgrims Half Marathon | Half Marathon
- 21 km trail running
- Sat 4 Apr
- £28-£35
Aberdyfi Half Marathon | Half Marathon
- 21.1 km trail running + 850 m ascent