Trail Running calendar near Merthyr Tydfil 2026-2027

We have found 344 Trailruns within 80 miles of Merthyr Tydfil. See below where and when you can find the races.

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.

An evening trail event at Haldon Forest Park on 30 October 2026 offering a 2.5 km fun run plus 5 km and 10 km running and canicross options, free race photography and a Halloween 2025 medal for each finisher.

A 32 km, 1800 m ascent mountain event at Pen y Fan featuring three separate ascents via six different paths, with Classic and 16 kg weighted categories. Navigation is required and control marshals monitor checkpoints.

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 series of self-navigated coastal ultramarathons and a 38 km challenge along the South West Coast Path, featuring GPS tracking and ITRA/UTMB index points. Distances range from 38 km to 110 miles, with significant coastal climbing and varie..

Trail races at Oxwich Bay on 7 November 2026 with 10K, half, marathon and ultra routes across cliff tops, dunes and beaches. Part of the Endurancelife 2026-2027 season and included on the Season Leader Board.

A mixed terrain running event around the Brecon Beacons on 7 November 2026, held across trail, mountain, canal and road. Three distances are offered and conditions in mid-November can range from bright sunshine to freezing temperatures with..

A 6 miles out-and-back fell race from Llanfachreth with about 1900 ft of ascent, part of the Meirionnydd Winter Race Series. Full WFRA kit and fell shoes are required and a junior race runs on the same course.

30 mile ultra through the Brecon Beacons, climbing to Pen y Fan with 3750 ft gain, five checkpoints and a six hour mid race cut off; limited to 200 entries on 7 Nov 2026.

Coastal ultra events on the South West Coast Path around Exmoor and North Devon, from 38 km to 110 miles, self navigated with GPS tracking and race index points.

A multi terrain race of about 12 km around Barton Farm Country Park in Bradford on Avon on 2 November 2025, featuring a river crossing and off road sections; the event raises funds for Alzheimer's Support (West Wilts).

A ten mile cross country race in Chipping Sodbury with muddy, varied terrain and water obstacles. Held on Remembrance Sunday and preceded by a commemorative silence, it draws around 1300 runners.

A 10 km night off-road race at Wyre Forest Visitor Centre on 11 November 2026. Torches are compulsory and canicross is permitted; medals and prizes are awarded and a self-service water refill is provided.

Fully marked trail races at Margam Park including a half marathon and a 10k, running through woodland, parkland and the deer park with coastal views; entries include parking, timing, a medal and download photos.

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.

Mid-November night and day off-road races around the Bath Skyline, offering 500 m, 5 km and 10 km options with marked trails, mud and panoramic city views.

A winter 2026/27 night trail series across Somerset with four events and both 5km and 10km route options. Runners can enter individual events or the full series and order a bespoke wooden finisher's medal for each race.

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