Trail Running calendar near Caernarfon 2025-2026

We have found 111 Trailruns within 80 miles of Caernarfon. See below where and when you can find the races.

The Sea 2 Summit - Offa's Dyke Half/Full/Ultra is a challenging running event that takes place along the scenic Offa's Dyke footpath, starting from Prestatyn seafront. Participants can choose from three distances: Half Marathon, Full Marathon, and a new Ultra distance of 33 miles, which culminates a..

The Moel Famau Festive 'Piece of String' Race is a unique running event held on the last Saturday before Christmas at Bwlch Penbarras. Participants can expect a surprise distance and route, ranging between 6 and 12 kilometers, which will be revealed as the race progresses. The event includes a Canic..

January 2026

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..

February 2026

The Anglezarke Amble Challenge will take place in Horwich on Saturday 14 February 2026. You can run between 16 and 24 miles.

The Chester Ultra 50 will take place in Ellesmere Port on Saturday 28 February 2026. This trail is organized by GB Ultras. You can run 50 miles.

UTMB Index
March 2026

The Loggerheads Trail 5k & 10k is a popular trail running event set to take place in March 2026 at Loggerheads Country Park. Participants can choose from three race options: a 5k Trail, a 5k Canicross Trail, and a challenging new 10km route. The courses feature a variety of terrains, including river..

The Nant Yr Arian Silver Trail Races, set in the stunning Cambrian Mountains, offer participants a choice of challenging routes, including a Half Marathon and a 10km race, suitable for both beginners and experienced runners. The event also features children's races for various age groups. With fully..

The Brynkinalt Running Festival is a community-focused sporting event held at the scenic Brynkinalt Estate near Wrexham. It features trail running races over approximately 5k and 10k distances, open to participants of all ages and abilities, including canicross on Saturday and traditional running on..

April 2026

The MTC Gelert is a challenging 47-mile ultra marathon that takes place from Barmouth to Llanidloes, following the scenic National Cycle Route 8. This event is part of the Mount to Coast End to End Challenge Series and is also the third day of the CYMRUN, a six-day multi-race event covering 256 mile..

The Chester Ultra 100 is a challenging 100-mile ultramarathon set in Chester, featuring a total elevation gain of 1590 meters. The course showcases some of the region's best trails, including the Sandstone Trail and the Marches Way, with 12 checkpoints providing essential support and refreshments. P..

July 2026

The MTC Blue Caps is a 36-mile ultra marathon, part of the Mount to Coast End to End Challenge Series. This event takes place in England, starting from Wigan and concluding at Tarporley. It is also recognized as Day 4 of the MTC Albion, a 13-day multi-race challenge.Participants must maintain a mini..