Wales
Trail Running Calendar Wales 2026-2027
Explore the best trail runs in Wales for 2026-2027! Our updated list features 184 exciting trail runs across the region. Find your next trail run in Wales below and join the trail community at these great events!
September 2026
A 12km canitrail and trail run at Halo Ogmore Valley Life Centre in aid of PAPYRUS on 13 September 2026, entry £26, dogs welcome.
Coastal trail races in Abersoch on the Llyn Peninsula offering 20K and 10K routes plus beach runs, chip timing, drink stations and a beach finish with music and prizes.
A 12 hour Backyard Ultra on a 4.2 mile loop near Crickhowell in the Black Mountains. The final lap is run in reverse as a sprint to decide male and female winners; medals are awarded for 32 miles or more.
Multi-distance triathlons around Llyn Padarn with a mountain section on Snowdon. Solo and team entries available, with mandatory support crew for double and triple distances and compulsory safety kit for all athletes.
Ras Pedol Peris is an AL Welsh fell race in Eryri near Llanberis with full 28 km and half 14 km routes over several mountain summits on 19 September 2026.
A scenic, hilly trail half marathon in the Cothi valley near Pumsaint, offering a 13 mile race, a 6.5 mile alternative and a kids race, based at Pumsaint Village Hall on 20 September 2026.
The Porthkerry 5MT is a five mile mixed terrain race in Porthkerry Country Park, offering coastal views and diverse surfaces. The 2026 edition marks the race's 20th anniversary and includes the South Wales Regional Trail Championship.
A multi day 286 km mountain race across Wales with solo and team entries, five indoor checkpoints and a 108 hours time limit.
Three coastal trail races on 26 September 2026 around the Gower Peninsula offer routes of 50, 34 and 23 miles along cliffs, bays and coastal paths. The event is self navigated with checkpoints, GPS tracking and coach transfers to starts.
A community-hosted BM fell race in Glyn Ceiriog covering 11.6 km with 425 m ascent, entry on the day, minimum age 18, and post-race soup and cakes at the centre.
Guto Nyth Bran is a fell race on 26 September 2026 at Bedwas Community Hall covering 9.6 km with 396 m of climb. The course is partially marked, includes a short walk from parking, and is for entrants over 18.
A fully waymarked, supported sea to summit ultramarathon from Caernarfon Castle to Bron y Feds Uchaf covering 29 miles and 5600 ft of ascent.
Trail race at Margam Country Park offering 5 km and 10 km routes through woodland with castle views. The event features chip timing, water stations, a finisher's medal and parking included with entry.
A fell race near Criggion covering 11.5 km with 790 m of ascent on a partially marked course that requires navigational skills. Entry is £8 and teams may enter free of charge.
Guided trail run of about 10 km from Llangollen that visits Castell Dinas Bran and the Abbey, returning along the canal at a steady pace with regular regrouping stops.
October 2026
Repeat a 9 mile mixed-terrain loop at The Nature Centre, completing as many laps as possible within an eight hour limit.
A 7 hour Time Challenge at Dare Valley Country Park with flexible distances from 3 km to ultramarathon options. Finishers receive a themed medal, distance pins and refreshments including doughnuts and ice cream.
A 3.2 km fell race on Fan Fawr with 305 m ascent, part of the South Wales Series; entry £2 on the day, minimum age over 16.
Uphill only 10 km from Ruthin to Moel Famau finishing above 550 m, featuring varied trails, a steep final gully and an optional bus return to Ruthin.