Trail Running calendar near Cardiff 2025-2026

We have found 247 Trailruns within 80 miles of Cardiff. See below where and when you can find the races.

The Pagan Midwinter Marathon is an exciting running event set in the picturesque Chagford, located in the north-eastern corner of Dartmoor, known for its rich pagan history. Scheduled for January 24, 2026, the event features two challenging distances: a marathon of over 28 miles and a half marathon..

Pagan Trails is a challenging running event set in the picturesque Dartmoor region, specifically in Chagford. Participants can choose between two distances: a Marathon of over 28 miles and a Half Marathon exceeding 14 miles, both featuring significant elevation gains. The routes take runners past an..

February 2026

The Westonbirt Arboretum Winter Night Race is a unique running event set in the stunning National Arboretum, featuring over 2,500 tree species. Participants can choose between 5km and 10km routes that showcase the arboretum's diverse landscapes, combining the beauty of nature with a solid running su..

The Icing on the Cake is a thrilling trail running event set in the picturesque Shropshire Hills, featuring both half (13.1 miles) and full (26.2 miles) marathon options. Scheduled for February 1, 2025, participants will navigate a scenic route that showcases the rugged beauty of the area, starting..

The Westonbirt Arboretum Winter Day Race is a scenic running event set in the National Arboretum, featuring over 2,500 tree species. Participants can choose between 5km and 10km routes that showcase the stunning landscape and diverse tree collections. The event promises a solid terrain, combining th..

April 2026

The MTC Afanc is a challenging ultra marathon event covering approximately 39.8 miles along the scenic National Cycle Route 8, from Glasbury to Merthyr Tydfil. Scheduled for April 2026, it is part of the Mount to Coast End to End Challenge Series and serves as Day 5 of the CYMRUN, a six-day enduranc..

The MTC Y Draig Goch is a challenging ultra-running event covering a distance of 47 miles, part of the Mount to Coast End to End Challenge Series. Set against the scenic backdrop of National Cycle Route 8, the race begins at Travelodge in Merthyr Tydfil and concludes at Marco's Cafe in Barry Island...