Trail Running calendar near Gwynedd 2026-2027

We have found 229 Trailruns within 80 miles of Gwynedd. See below where and when you can find the races.

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.

Trail races of 10k, 21k and 42k take place in Delamere Forest with marked routes, GPX support and marshals. An event village offers food, drinks and partner freebies, and discounted event t shirts are available.

The Trods and Plods Fell Enduro will take place in Bwlch Penbarras on Sunday 26 April 2026. You can run 12 kilometers.

A steep 4.7 km fell race near Penmaenmawr with about 489 m of ascent. The partly marked route uses rough, off track terrain and requires experience and basic navigation; parking is in the car park behind Spar.

May 2026

Trail races based in Brecon with circular routes through Bannau Brycheiniog National Park. Options are 100 km, 75 km and marathon distances with marked junctions, multiple checkpoints, a compulsory kit list and GPS route files.

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 trail event from Carding Mill Valley offering a Half Marathon or Marathon over a 13.1 mile lap of the Long Mynd, with entries limited to 200 for the main race and a virtual option during the week of May 4th.

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.

A 13.4 km fell race around Talgarth with 610 m of ascent. The course is partially marked and requires navigation; entry is £10 pre entry or £15 on the day and the event is insured by the WFRA.

A 5.1 km fell race at Fairy Glen near Penmaenmawr with 273 m of climb, part of the North Wales Mid Week Series. A juniors programme has multiple age classes and race day entry is £2.

Sheinton Steeplchase is a provisional 5.3 km cross-country near Cressage on 6 May 2026 with about 100 m of ascent. Entry is on the day for £10 and 2026 will be the last running of the race.

A 6.9 km running event at Ysgol Dinas Bran in Llangollen with 350 m of ascent. The course is partially marked, minimum age over 16, day-entry fee £5, with refreshments plus showers and changing available.

A summer evening charity run at Marbury Park with a 5k adult race and 1k kids' fun run, plus BBQ, bar, cake stall and music. Proceeds go to The Stroke Association and all finishers receive a medal.

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.

Test your endurance on a technical 3.2 mile mountain loop at Mynydd Troed. Complete as many laps as possible within ten hours as a solo runner or part of a team in the heart of the Black Mountains.

A 115 km multi-discipline race from Abersoch Beach to Snowdon summit and back, combining a sea swim, road cycling and a mountain ascent via The Watkin Path. The 2026 event reached a 400-person capacity and is currently sold out.

A set of off-road fell races in the Preseli hills featuring a 10.8-mile Bach and an approx 24-mile Beast with substantial ascent, marked and partly supported courses, category prizes, and WFRA safety and kit requirements.

Conquer up to 50 miles and 10000 feet of elevation in the hills of Shropshire. Choose your own path through four unique loops in any order or direction while enjoying a 16 hour buffet at the central race headquarters.

A three-stage route linking Snowdon, Cadair Idris and Pen y Fan across North, Mid and South Wales, covering about 17 miles and 2,334 m of ascent in roughly 19 hours. Options include guided events with leaders and transport or self-organised..

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