Trail Running Calendar Wales 2026-2027

We have found 134 Trailruns in Wales. Check below where and when you can find the races.

Held in Porth Penrhyn, Bangor on 14-15 November 2026, Slate Trail Ultra offers two trail races of 147 km and 80 km along the Snowdonia Slate Trail with substantial elevation gain and organised aid stations.

UTMB Index

Explore the forest trails of Margam Park with a choice of three distances: 5 km, 10 km, or a half marathon. The fully marked routes include checkpoints, and your entry covers parking, timing, and a finisher's medal. A mandatory kit list ens..

A guided *55 km* trail run on Anglesey taking in three high points and over 2000 m of ascent, split into five supported sections with guides, checkpoints and a wooden medal and certificate for finishers.

The RTT Afan Forest Trail 10k & 5K is the final race of the 2026 RTT Series. Choose between 5km and 10km trail runs through the scenic and varied terrain of Afan Forest. The event includes chip timing, a finisher's medal, and facilities sta..

December 2026

This winter trail run in Alyn Waters Country Park offers 5k and 10k courses, plus a Canicross option. The fully marked routes feature varied terrain. All finishers get a medal and a free kids' dash makes it family friendly.

A winter trail event in the Brecon Beacons from Cwmdu Hall offering 14 km, 10 mile and half marathon routes on technical mountain terrain with marked courses, stocked checkpoints, medical support and a festive gift exchange.

This point-to-point trail run follows the famous Offa's Dyke path from the Prestatyn seafront into the Clwydian Hills. Choose from a Half, Full, or Ultra Marathon, each finishing at a different summit. GPS tracking is used, and all runners..

Run the Trail by Torchlight in Llangollen: an 8 km fell race over scenic starlit moor with about 244 m ascent. Bring a head torch and enjoy a lively night race open to runners aged 16 and over.

Celtic Trail Races bring three winter trail distances in South Wales, from flowing single track to steep climbs, with views over the Brecon Beacons. Courses are waymarked and finish at Dare Valley Country Park with checkpoint support.

Take on a festive trail challenge on December 19, 2026. This themed half marathon features a mixed-terrain course, a fancy dress prize, and festive snacks at the finish. The event is limited to just 70 participants.

A pre-Christmas trail on Moel Famau with a surprise route of about 6 to 12 kilometres, starting and finishing at Bwlch Penbarras. Canicross is available and finishers receive a mince pie and a festive medal.

Get into the festive spirit at this family friendly Christmas fun run in Dare Valley Country Park. Choose a 2.5k or 5k lap course and enjoy mince pies, music, and a costume contest. Every finisher gets a themed medal and goody bag.

February 2027

Celebrate Welsh heritage with a flexible run at Dare Valley Country Park. Choose your own distance in this 7-hour time challenge on scenic, well-maintained paths. All finishers get a medal, goody bag, and enjoy aid station support.