Trail Running Calendar Wales 2026-2027

We have found 130 Trailruns in Wales. Check below where and when you can find the races.

Choose your own distance challenge in a 7-hour window at Dare Valley Country Park. Run scenic laps on well-maintained paths, with Britney-themed fun. Everyone finishing 3 km or more gets a themed medal, a goody bag, and ice cream.

A trail running event on 26 July 2026 around Pen Y Fan with 5 or 13 mile routes that reach the summit. Entries include a buff, medal and chip timing, and specific compulsory kit is required for each distance.

August 2026

A 50 mile loop around the Epynt Way on 1 August 2026 starting and finishing at Noyadd Farm Camping in Builth Wells. The mostly trail route has 8,559 ft of elevation, five stocked checkpoints and no time limits.

The Brecon Beacons 51k trail run starts in Talybont-on-Usk on 8 August 2026. The route heads into the hills for panoramic views across the Brecon Beacons countryside.

UTMB Index

Long-established August challenge in northeast Wales offering three route choices of 32 miles, 24 miles and 16 miles. Routes climb the Clwydian Hills along the Offa's Dyke Path with ridge and woodland sections.

SkyRun Eryri in Rhyd-Ddu, Eryri/Snowdonia stages four mountain races from 16 km to 55 km on 15 August 2026, with large elevation gains, aid stations and a mix of ridgelines, scrambling and technical trails.

Trail running at Park Farm Llangattock on 22 August 2026 with 10 km, 10 mile, 20 mile and 32 mile Ultra options across canal, moorland and escarpment terrain. Marked routes, GPX files and multiple aid stations are provided.

Run your chosen distance on the scenic paths of Dare Valley Country Park. This 7-hour time challenge offers distances from 3km to ultra, with a unique cupcake medal for all finishers. Enjoy a bake-off themed aid station and post-run goody b..

A trail event in Afan Forest Park offering two measured routes of about 6.5 miles and 10.5 miles with substantial climb and prize categories. A separate one mile Mini Beast for children includes a finisher medal and sweets.

This ultra event offers two classic distances on the Cambrian Way, starting from historic Llanthony Priory or Abergavenny and finishing in Cardiff. The route passes Castle Coch and traverses mountain landscapes and wooded valleys. It's orga..

A fell race in North Pembrokeshire on Sat 29 Aug 2026 covering 8 km with 330 m of climb. Entries are accepted in advance and on the day, and junior Mochyn du races have entry on the day only.

A fell race in Machen of about 7 km with 365 m of ascent, with registration at Machen Welfare Ground and start and finish on Church Street. Entry is £7 on the day and participants must be over 18.

September 2026

Coastal ultra marathon events on Anglesey include a 130 mile full circumnavigation and a 47 mile point to point race along the coastal path. Routes are mainly trail based, include checkpoints with cut-offs, and feature significant ascent.

A 30 mile ultra around the Rhymney Valley Ridgeway Walk, mostly on trail with about 4,252 feet of ascent, starting and finishing at Parc Penalta, with three fully stocked checkpoints and no official time limit.

A 102 mile, 5,172 m elevation ultramarathon across Snowdonia on 5 September 2026 with 11 checkpoints and a 42 hour cut off. The course is self navigated and runners are tracked online via GB Race Tracker.

A 45 mile mountain ultramarathon in Snowdonia Eryri from Betws-y-Coed, with about 2800 m ascent, five supported checkpoints and mandatory mountain kit. Entry requires previous ultra and mountain experience and a minimum age of 20.

Explore the rugged Welsh landscapes at the RunThrough Snowdonia Sea2Sky trail races. Choose from 12k, 25k, or 54k distances on a route from Barmouth beach to Cadair Idris summit. Enjoy chip timing, a themed medal, and free race photos.

A six day self supported multistage race down the spine of Wales from Conwy Castle to Cardiff Castle, covering 380 km and 17,400 m of ascent. Two day northern and southern options offer condensed sections of the same route.

UTMB Index

A single-day guided crossing of the 15 Welsh 3,000 ft peaks across Snowdon, Carneddau and Glyderau, covering about 50 km and 4,000 m of ascent. Transport, guide, support vehicle and food stations are included.

The Relentless This event takes place at the Bridgend Miniature Railway in Bridgend, South Wales. It is a multi-lap ultra marathon organized by Mad Running Junkies. Runners choose between two distances: a 50-mile or a 100-mile race. The rac..