Wales
Trail Running Calendar Wales 2026-2027
Explore the best trail runs in Wales for 2026-2027! Our updated list features 193 exciting trail runs across the region. Find your next trail run in Wales below and join the trail community at these great events!
December 2026
Pre Christmas social run and walk at Conwy Falls offering a leisurely run or walk of up to 2 hours with a cafe gathering afterwards.
A multi-distance timed challenge at Dare Valley Country Park with lap-based distances, themed medals, bobble hats, aid stations and on-course support.
A downhill fell race from Moel Famau summit to Cilcain, about 4 km with a 350 m descent; date probable 27 December 2026 and the course is partially marked.
Timed lap based run at Barry Sidings Country Park offering distances from 5 km to ultra on a 5.3 km tarmac lap with a 7 hour limit.
A provisional night navigation event near Rosebush covering 16 km with 660 m climb; experience and strict compulsory kit are required.
January 2027
A winter fell run from Pen-y-Pass Youth Hostel, about 8 km with 181 m ascent, plus a separate junior short course for over 12s.
Lap-based timed event in Rhydycar, Merthyr Tydfil with a 5.3 km tarmac lap, distances from 5 km to ultra, timed over seven hours and a no-medal entry option.
Annual 12 mile or 20 mile walking and running challenge around the Elan and Claerwen Valleys that requires map reading and specific kit.
A scenic 5k loop from the Caravan Park and Cafe at Llanbenwch near Ruthin, featuring mixed road and trail surfaces, electronic timing and a finisher medal.
A 6.3 km winter fell race near Monmouth with 350 m of ascent, mixed rough underfoot and road sections, part of the South Wales Winter Hill Series.
A midwinter mixed terrain 6.4 miles off-road race around Cosmeston Lakes Country Park organised by Penarth and Dinas Runners under Welsh Athletics licence.
M10 Cardiff at Coopers Field, Bute Park offers 10 Mile and 5 Mile races as part of the 2027 M10 Race Series with chip timing and Welsh Athletics affiliation.
43.5 km winter mountain race around Yr Wyddfa on 23 January 2027 with whole, half, relay and pair options and mandatory winter kit.
Lap-based timed event on 23 January 2027 at Parc Taf Bargoed offering distances from 5 km to ultra with a 7-hour time limit and flexible rock-up starts.
A seven hour time challenge at Dare Valley Country Park offering distances from 3 km to 50 km, with medals, aid stations and vegan goody bags.
A 9 km fell race with 550 m ascent in the South Wales Winter Hill Series, requiring navigational skills and mandatory full kit; minimum age over 16.
Winter ultra in the Brecon Beacons on 30 January 2027 offering 75 mile and 100 mile routes starting from Penderyn Square in Merthyr Tydfil.
A 6 mile winter fell race to 634 m with 2000' ascent, three climbs, varied forest and moorland terrain, and race HQ at Abergynolwyn Village Hall.
February 2027
A Backyard Ultra near Crickhowell on 6 February 2027 featuring repeated 4.2 mile loops, a reversed final race lap, trophies for final lap winners and medals from 32 miles.
Timed multi-lap run in Parc Taf Bargoed with 5.3 km laps and distances from 5 km to ultra, offering bespoke medals or a lower cost no medal entry.