Trail Running calendar near Merthyr Tydfil 2026-2027

We have found 374 Trailruns within 80 miles of Merthyr Tydfil. See below where and when you can find the races.

The Zombie Shuffle at Pengethley Manor offers 5k, 10k, half marathon, marathon and ultra options on a tough offroad course with a seven hour time limit. Virtual entries are available worldwide with medal options for paid entrants.

Mendip Muddle is a 20 km multi terrain fell race in Somerset with about 420 m of climbing. Headquarters are at Charter House Outdoor Activity Centre; on course water and first aid are provided and prizes are awarded by category.

Routes along the Grand Western Canal in Tiverton include Marathon, Half Marathon and 10k options on hard packed gravel towpaths. The event is cupless so runners must carry their own water and finishers receive a bespoke medal.

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.

The Haldon Halloween Twilight Run will take place in Exeter on Friday 30 October 2026. You can run between 5 and 10 kilometers.

A 32 km mountain event on Pen y Fan with 1800 m of ascent and three summit climbs via six different routes. Two categories are offered: unweighted and a 16 kg weighted class; navigation is unmarked and a GPX will be provided.

Winter Sugar Loaf is a 9.6 km fell race near Abergavenny on 31 October 2026 with 485 m of ascent; entry via Fabian4 costs £9. The route is partially marked, full WFRA kit is mandatory and limited parking is available.

November 2026

An off road ultramarathon from Maiden Newton of about 35.9 miles with roughly 1,300 m of ascent, passing hillforts and coastal views. Six aid stations offer water and cake, GPX files and maps are provided for navigation.

A 10 mile off road trail in Stonehouse near Stroud on 1 November 2026, starting with about one mile uphill followed by nine miles of undulating muddy trails. Canicross runners are welcome and there is a 2 hour 30 minute cutoff.

Eight-day race series in Telford offering 8 miles, 16 miles or a 26.2 mile marathon each day. Each day is a separate race with its own medal and Race HQ at The Unicorn Inn in Little Dawley.

A multi-distance coastal event on 7 and 8 November 2026, finishing in Minehead. Routes range from 38 km to 178 km, include rugged Exmoor coastline and night-time sections, and require prior long distance experience for the 110 mile race.

Coastal trail running at Oxwich Bay on 7 November 2026 with 10K, half, marathon and ultra routes across cliffs, woodland, dunes and beaches; part of the Endurancelife 2026-27 season with leaderboard points.

Three trail distances take place around Talybont On Usk on 7 November 2026: a 49 mile ultra, a 26 mile marathon and a 13 mile half marathon, all on mixed trail, mountain, canal and road terrain.

Ras Rhobell Fawr is a Meirionnydd Winter Series fell race covering 6 miles with 1900 feet ascent, starting and finishing at Llanfachreth village hall. The out and back route climbs fields and tracks to a summit and requires full WFRA kit an..

Experience a 30 mile ultra marathon through the heart of the Brecon Beacons featuring the summit of Pen y Fan. This trail event offers technical terrain and scenic reservoir views with a strict 200 runner limit.

A series of self‑navigated ultra trail races along the North Devon and Exmoor coast on the South West Coast Path, with distances from 38 km to 110 miles, GPS tracking and transport options to start locations.

Experience an evening off road run through the tracks and trails of The Wyre Forest. This ten kilometer event features a two lap course in the dark where torches are required and canicross runners are welcome.

Trail Half Marathon Wales runs in Margam Country Park and Forest on 14 November 2026, offering a fully marked half marathon and 10k on forest trails with checkpoints, safety cover, and included car parking.

Off road 5 km and 10 km races around the Bath Skyline in November, with night and day options, a kids 500 m and a canicross wave. Mixed trails, muddy sections and marked routes with a large two sided medal for finishers.

A four-event night trail running series across Somerset from November 2026 to March 2027, offering 5 km and 10 km routes at each location and options for single-event or full-series entries.

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