Wales
Trail Running Calendar Wales 2026-2027
Explore the best trail runs in Wales for 2026-2027! Our updated list features 175 exciting trail runs across the region. Find your next trail run in Wales below and join the trail community at these great events!
October 2026
Trail running at Loggerheads Copuntry Park with 6 km, 6 km Canicross and 12 km options, fully marked courses and no time limits.
A seven hour Time Challenge at Dare Valley Country Park offering distances from 3km to 50km, themed finisher medals and distance pins, on course aid with vegan options, and basic venue facilities including toilets and free parking.
A 50 km trail race around Llyn Brenig from Corwen, using marked footpaths with GPS navigation, checkpoints and mandatory kit requirements.
Memorial run in Aberfan on 18 October 2026 with flexible lap-based distances, charity donations, and a virtual participation option.
Trail event at Oxwich Bay on 18 October 2026 with a self navigated half marathon and marked 10 km and 5 km routes across coastal paths, woodland and sand dunes.
A memorial road and off road event organised by Green Events featuring a half marathon and a 12k in mountainous scenery. The race is cupless, open to those over 16, and lists online and on the day entry options.
A guided 13 km loop around Llyn Trawsfynydd in Southern Snowdonia on runnable trails with limited ascent and regular regrouping stops.
Mountain trail races across the Brecon Beacons and Black Mountains offering distances from 21 miles to 100 miles with GPS navigation and staffed checkpoints.
A 32 km, 1800 m mountain challenge on Pen y Fan with three climbs via six different routes, offered as an unweighted race or a 16 kg weighted category.
A 9.6 km fell race with 485 m ascent near Abergavenny on 31 October 2026; full WFRA kit is required and parking at the pub is very limited.
Timed lap event at Barry Sidings Country Park with flexible start times, distances from 5 km to ultra on a tarmac out and back course and a medal or no medal option.
November 2026
Trail races at Newborough Forest and Llanddwyn Island, offering 10k and half marathon distances, chip timing, on course support and bilingual services.
Trail races around Moel Famau on 1 November 2026 with 17 km and 10 km options, mandatory waterproof and navigation kit, and reduced single use plastic.
Approximately 7 mile multi-terrain race from Risca Leisure Centre to Twmbarlwm and back, with about 1000 ft ascent; entries listed via Entry Central.
An evening trail run in Llandegla Forest on 6 November 2026 covering 6.4 km with 229 m climb; partially marked course, compulsory headtorch and kit, £5 entry on the day.
Trail races at Oxwich Bay on 7 Nov 2026 with 10K, half, marathon and ultra routes across coastal terrain; online check in and season leaderboard points apply.
Mixed trail, mountain, canal and road runs around the Brecon Beacons on 7 November 2026, offered at 50 miles, 26 miles and 13 miles.
A medium length fell race from Llanfachreth with a 6 mile route and 579 m ascent, forming the first event in the Meirionnydd Winter Race Series.
A 30 mile trail ultra from Merthyr Tydfil through the Brecon Beacons with four checkpoints, mandatory kit and a six hour cut-off at checkpoint three.