Trail Running calendar near Swansea 2025-2026

We have found 210 Trailruns within 80 miles of Swansea. See below where and when you can find the races.

Run a scenic 50 km loop from Dunster along the South West Coast Path across Exmoor with about 1600 m climb, or choose shorter loops and a family 10K around Dunster Castle. Camping and robust on course support make this a top summer ultra.

Run your own race at Ooops I Ran It Again Wales, a 7 hour time challenge at Dare Valley Country Park on 25 July 2026. Pick any distance from a 3 km minimum to ultra and enjoy drinks stations, a cafe and a themed medal.

Take on the Pen Y Fan Challenge for a scenic trail run to the summit of the highest peak in South Wales, with 5 mile and 13 mile options for runners aged 16 or older. Expect chip timing, a finisher medal and a fully marshalled route.

August 2026

Take on EDDUM 2026 on August 1, a 50 mile loop along the Epynt Way around the Sennybridge military training area, mostly trails with plenty of climbing. The supported route features five staffed checkpoints, no time limit and a relaxed fini..

Enjoy the Totnes 10K along mostly off road riverside trails beside the River Dart, starting and finishing in Borough Park with a lively race hub and bespoke finisher medal. Limited places and proceeds support Totnes Caring.

Take on the Standish Woodland Chase on 2 August 2026, a hilly just over 8 miles route along the Cotswold Way featuring woodland trails and escarpment views. All finishers receive a metal souvenir medal.

Tackle the Mendip Marauder on 8 August 2026, a rugged trail challenge offering 30 mile and 50 mile routes across woodlands, hilltops and classic Mendip landmarks. Both distances finish on Uphill Sands Beach in Weston Super Mare for a glorio..

Tackle the Sticklepath Horseshoe a 15.5 km fell race over rugged moorland with 519 m climb. Pre entry is limited so book early. Bring map compass and solid navigation skills as this event is not suitable for beginners.

The Brecon Beacons 51k will take place in Talybont-on-Usk on Saturday 8 August 2026.

UTMB Index

Experience the Two Tunnels in Bath, a unique run through two lit, surfaced railway tunnels and rolling paths. Options span short Colourburst runs up to marathon and 50 km distances, with proceeds supporting Sustrans.

Join the Crook Peak Cake Race in Axbridge on Wed 19 Aug 2026 for a spirited 3 mile fell challenge across stunning Somerset hills, finishing with cake and community cheer. On the day entry available for runners aged 14 and up.

Join the Gt. Links Tor Flyer on Dartmoor for a challenging 7.5 km fell race with 388 m of climb, finishing at the Fox & Hounds in Lydford. Open to seniors and juniors with pre and on the day entry.

Discover the Summer MTC Green Man Ultra around Bristol's Community Forest Path with 45 and 30 mile clockwise routes finishing at Ashton Park School. With festival style checkpoints, a bespoke Green Man medal and a challenging scenic route.

Tackle rugged trails and dramatic escarpments at the Beast of Llangattock at Park Farm near Crickhowell, with distances from 10 km to a 51 km ultra. Expect steep technical terrain, well stocked aid stations and sweeping hilltop views.

Enjoy scenic single lap 5K and 10K trail runs around Wimbleball Lake, with a canicross option for runners and their dogs. Part of the Wimbleball Sports Festival, it promises off road views, medals and a friendly festival vibe.

Run point to point along the Cambrian Way into Cardiff with two scenic trail ultra options, 44 miles from Llanthony Priory or 33 miles from Abergavenny. Expect rugged fells, woodlands and a dramatic finish near Castell Coch.

Steam Challenge on Sunday 30 August 2026 is a timed out and back race along an old train line near Bridestowe with a seven hour limit and medals for finishers. Enjoy undulating off road and paved terrain.

September 2026

Take on the RIDUM 30 mile ultra on September 5, 2026 exploring ridge top trails around the Rhymney Valley with big climbs and mostly off road terrain. Well stocked checkpoints and post race care await finishers.

Celebrate the 40th Haytor Heller on Dartmoor, a challenging 6 mile off road loop from Haytor Rock. Expect steep climbs, fast descents, woodland stretches and a stream crossing for a classic moorland race.

Join the Ross on Wye Riverbank Run on 6 September 2026 for scenic multi terrain 5k, 10k and a family fun 500m along the River Wye. Flat, fast course, chip timing and medals for all finishers make it perfect for racers and families alike.