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 in Radnor forest on 23 August 2026 with varied terrain and mountain views, supporting the Special Care Baby Unit in Hereford.
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 fell race near Machen covering 7 km with 365 m ascent, held with on the day entry and registration at Machen Welfare Ground.
A mountain fell race at the Cilcain Show in the Clwydian Range, featuring a 7.4 km course with 380 m ascent and linked WA and North Wales championship races.
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.