Wales
Trail Running Calendar Wales 2026-2027
Explore the best trail runs in Wales for 2026-2027! Our updated list features 182 exciting trail runs across the region. Find your next trail run in Wales below and join the trail community at these great events!
August 2026
A very short but steep mountain race on Tryfan near Bethesda, with exposed rocky terrain and expert navigation required. Minimum age over 18 and a £1 entry fee supports Ogwen Mountain Rescue.
A 7 hour time challenge at Dare Valley Country Park with distances from 3 km up to 50 km, a cupcake magnet finisher medal, a baking competition, aid stations with vegan options and goody bags for finishers.
A 9.8 km traverse near Pontypool with a 291 m climb, junior race distances and three-person team entries.
A 5.5 mile multi-terrain fell run around Pen Y Gwely reservoir that starts and finishes within a traditional village show near Oswestry. The partially marked route climbs 225 m, requires limited experience, and has an over 15 minimum age; entry is £7..
Two trail races through the mountains of Afan Forest Park, about 6.5 miles or 10.5 miles with significant climbs. Online entry, chip timing, marshalled route, finishers receive a t shirt and medal.
A 10 mile trail race through Radnor forest in Mid Wales on 23 August 2026, held in aid of the Special Care Baby Unit in Hereford. The route reaches Black Mixen at 2130 ft and includes forestry roads, moorland and tree covered single track.
A guided trail run meeting at the Ponderosa cafe covering about 7 km on Llantysilio Mountain with planned regrouping stops.
Point-to-point ultras along the Cambrian Way into Cardiff, offered as 44- and 33-mile options with self-navigation, live tracking, indoor aid stations, and on-route support.
An approximately 8 km fell race in North Pembrokeshire with about 320 m of climb and a partially marked course. Junior races run in several age categories and entry fees are modest.
A 11.3 km fell race with 350 m ascent near Mynachlog-ddu and Rosebush. The partially marked course requires navigational skills and experience. Entry is £5 pre-entry or £7 on the day and includes tea and cake.
A hill race near Porthmadog covering 7.2 km with 564 m of ascent, partially marked and requiring navigational skills and experience. Entry is day only for £5 and teams may enter free.
A 9 mile fell race with about 2,800 ft of ascent visiting Tal y Fan and Moel Lus, featuring five ordered checkpoints and a cut off at CP2. Entry is limited to 100 and online registration opens 1/6/26.
A 7 km fell race with 365 m of ascent in Machen on 31 August 2026. The route runs on steep, loose terrain so trail or fell shoes are recommended and entry is on the day with a £7 fee and age limit over 18.
Mountain race in the Clwydian Range with a 7.4 km, 380 m course, junior races, and inclusion in Welsh Athletics and North Wales regional championships.
September 2026
Coastal ultra events on Anglesey offering a 130-mile clockwise island circumnavigation and a separate ~47-mile coastal route along the Isle of Anglesey Coastal Path.
A navigational endurance march in South Wales offering a full 64 km route and a 32 km half with self navigation and guided group options.
A multi-terrain off-road race of about 4 miles in Shotton on 4 September 2026, with pre-entry fees (£10, £8 affiliated), prize categories by age, a minimum age of 17, and a 200-person entry limit.
A new 15 mile trail event in September 2026 on the Rhymney Valley Ridgeway Walk, with 2,267 ft of ascent, mostly off-road terrain, one fully stocked checkpoint and organised entry support from Rudry to Parc Penalta.
A self navigation 102 mile ultramarathon across Snowdonia with live GPS tracking, 11 checkpoints, mandatory mountain kit and a 42 hour cut off.
Point to point trail races from Barmouth beach into Snowdonia, offering 12K, 25K and 54K options with aid stations, chip timing and a cupless policy.