Wales
Trail Running Calendar Wales 2026-2027
Explore the best trail runs in Wales for 2026-2027! Our updated list features 163 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
Trail races from Prestatyn seafront along Offa's Dyke offering half, full and a 55.5 km ultra finishing at Horseshoe Pass.
An 8 km trail in Llangollen on 11 December 2026 with 244 m climb; the course is partially marked and a good head torch is essential.
Winter trail races around Afan Forest and the Rhigos with fully marked 34 miles ultra, 26 miles marathon and 13 miles half finishing at Dare Valley Country Park.
A 24 hour out-and-back ultra from Llanbenwch campsite with solo or two to four person team entries and three distance options up to 98 km.
A festive trail race at Bwlch Penbarras with a mystery course of 6 to 12 kilometres, a canicross category, marshals and a mince pie at the finish.
Skirrid Xmas Hill Race is a 5.7 km fell race with 450 m ascent near Llanvihangel Crucorny on 19 December 2026; entry £10, no entries on the day.
Festive family-friendly 2.5 km and 5 km runs at Dare Valley Country Park with medals, goody bags, refreshments and free parking.
Christmas Carol bobble hat run at Dare Valley Country Park with a 7 hour time challenge, multiple distance options, themed medals and goody bags.
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 7 hour Time Challenge at Dare Valley Country Park in Aberdare offering distances from 5 km to ultra, themed medals, a bobble hat and on-course aid stations.
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 looped, exactly 5k multi terrain race from the Caravan Park and Cafe at Llanbenwch near Ruthin with electronic timing, medals and countryside views.
A 6.3 km winter fell race near Monmouth with 350 m of climb, part of the South Wales Winter Hill Series on 17 January 2027.
A winter race around Yr Wyddfa on 23 January 2027 covering 43.5 km with 2327 m ascent, offering full, half, relay and pair options.
A 9 km fell race at Cwm Nant-y-Groes with 550 m climb, navigational checkpoints, a flagged mandatory loop and enforced full kit; date and series inclusion are to be confirmed.
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.
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.
Mountain ultra and marathon from Brecon to Cardiff, featuring a 47.5 mile 2,800 m ascent ultra and a 26.2 mile 1,200 m marathon option.