Wales
Trail Running Calendar Wales 2026-2027
Explore the best trail runs in Wales for 2026-2027! Our updated list features 174 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
A timed ultra where participants repeat a 9 mile loop as many times as possible within an eight hour limit on mixed terrain with significant climbs near Bridgend.
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 fell race on 3 October 2026 with a 3.2 km route and 305 m climb near Storey Arms, included in the South Wales Series; entry on the day £2.
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.
A capped 32 mile trail event from Camp Plas in the Cambrian Mountains with marked routes, support checkpoints, on-site camping and mandatory kit checks.
A seaside hill race from Aberystwyth Promenade with a senior 11.7 km course including Pen Dinas and Consti climbs, plus junior races for ages 7 to 15.
A multi-terrain 10 km race or walk around Llandybie on 11 Oct 2026 with steep climbs, a walking option, limited entries, and proceeds going to charity.
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.
Cadair X is a 13.1 mile mountain half marathon with 1165 m of ascent that climbs to the 893 m summit of Cadair Idris. The marked route crosses woodland, glacial lakes and technical summit terrain and a GPX file is available.
A 50 km trail race around Llyn Brenig from Corwen, using marked footpaths with GPS navigation, checkpoints and mandatory kit requirements.
Join the Aberfan Memorial Run in Merthyr Tydfil to honour the 1966 victims and support the Aberfan Memorial Charity. Choose 5 km to ultra on a scenic tarmac loop along the Taff Trail with flexible start times and official timing.
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.
A series of mountain trail races across the Black Mountains and Brecon Beacons offering four distances from 21 miles to 100 miles. Routes combine marked sections, GPS navigation and staffed checkpoints with mountain safety cover.
A 32 km, 1800 m mountain run on Pen y Fan with three summit ascents and options for unweighted or 16 kg weighted categories; navigation is self managed.
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.