Trail Running Calendar Wales 2026-2027

Experience a scenic 40 mile ultra marathon along National Cycle Route 8 from Glasbury to Merthyr Tydfil. This quadrennial event offers a well supported route through the Heart of Wales with unique finishers medals.

Trail ultra in the Brecon Beacons offering 10, 20 and 40 mile courses from Gilestone Farm. Routes cross reservoirs and ridges, include marshals and refuel zones, and require mandatory kit checks.

A multi distance mountain event near Abergavenny on 18 and 19 April 2026, featuring 50 miles, 30 miles and a new 20 miles route through the Black Mountains and the Blaenavon World Heritage area. Entries closed 31 March 2026.

On 18 April 2026 Nightingale House Hospice stages 5 km and 10 km multi terrain runs at Alyn Waters Country Park with chip timing, marshals, water stations and finishers medals. A 1 km children's dash accepts on day entries.

Experience a scenic 35 mile ultra marathon from Merthyr Tydfil to Barry Island. Following the National Cycle Route 8 to the coast, this four yearly event offers a unique journey through the landscapes of South Wales.

An 8.6 mile multi terrain race around Trawsfynydd lake in Snowdonia, chip timed and limited to 400 runners. Proceeds support the volunteer South Snowdonia Search and Rescue team; open to athletes aged 17 and over.

A guided trail run of about 14 km on forest tracks in a quiet area between Bala and Lake Vyrnwy. The event includes group stops to enjoy the views and entry options for standard tickets and certain OutFit members.

Coastal trail running from Little Haven with 10K, half, marathon and ultra options across undulating exposed terrain in Pembrokeshire National Park. The event forms part of the Endurancelife season leaderboard.

Coastal ultramarathon between Prestatyn and Bangor with runnable sea views and inland hills. Choose a 50 km course reported as 53.8 km with about 2700 ft ascent or a 100 km route along the North Wales Path with about 8000 ft ascent.

Run your own distance on a 7-hour timed course through Parc Taf Bargoed in South Wales. Choose from 5k to ultra on a flexible, scenic loop starting from Trelewis. Walkers and runners are welcome with staggered starts and full event support.

A 40-mile point-to-point run along the Monmouthshire & Brecon Canal from Malpas to Brecon Basin on 25 April 2026, with three supported checkpoints, a 15-hour limit, and required safety kit for towpath conditions.

A 7 hour time challenge at Dare Valley Country Park offering distances from 3 km up to ultra and 50 km. Finishers receive a themed medal and distance pins, with aid stations and vegan options on course.

Three long distance mountain trail races around the Bannau Brycheiniog starting and finishing in Brecon, offering 100 km, 75 km and marathon distances with substantial ascent and on-course support.

Experience an epic guided traverse of the fifteen 3000 foot peaks in Snowdonia. This 48 km mountain run includes 4000 meters of elevation gain across three iconic ranges with full support and logistics provided.

Experience 30 miles of Welsh beauty on a circular route from Llanidloes. This inclusive trail event features 4,356 feet of elevation gain with no time limits and fully stocked checkpoints.

A Pretty Muddy 5k obstacle course at Coopers Field, Bute Park on 02 May 2026 where participants climb, crawl and slide to raise funds for cancer research. The event has a £50 minimum fundraising target and is for ages 13 and over.

A guided recce of the Paddy Buckley leg from Capel Curig to Nantmor across the Moelwyns, covering 35 km with 2,500 m of ascent on 3 May 2026. Small groups led by Mountain Leader qualified guides; entry fee £95 and minimum age 18.

The Sirhowy Challenge is a 10 mile multi-terrain race featuring a 1,500ft climb to Machen Trig Point. Participants enjoy a scenic loop through the Sirhowy valley with awards and a finishers social at the local club.

An annual off-road race day around Chepstow Park Woods starting and finishing at Hood Memorial Hall, Devauden. Distances include 10k, 5k, 2.4k for ages 8 plus and a 60m junior dash with a small donation on the day.

Run 24 hours along Offa's Dyke National Trail from Prestatyn on May 9 2026. Solo and team entries offer a continuous coastal to countryside challenge with staffed checkpoints and a finishers medal to mark your achievement.