Trail Running calendar near Merthyr Tydfil 2025-2026

We have found 252 Trailruns within 80 miles of Merthyr Tydfil. See below where and when you can find the races.

Join the Red Warrior Challenge at Margam Country Park on 22 March 2026 for mixed terrain races offering 5K, 10K and 20K options. Solo runners and canicross teams welcome at this sixth annual celebration of trail fun and challenge.

The Way of the Dead is a rugged 50k Dartmoor traverse on 28 March 2026, finishing at Tavistock Stannary Brewing Company. Enter solo or in pairs for a scenic but testing navigational challenge across tors and moorland.

Beyond Bristol offers scenic urban trail running on 28 March 2026, starting and finishing at Museum Square. Choose 25 km or 55 km routes that wind under Clifton Suspension Bridge and through parks, woodland and old railway lines with chip t..

Explore historic Bath in the Bath 50 Challenge with 10 km, 29 km or 50 km looped routes past the Royal Crescent and along the River Avon. Fully supported with aid stations, GPS tracking, finisher T shirt, medal and post race food.

UTMB Index

Enjoy scenic trail running at Escot Park near Exeter, with rolling climbs, mud and a two lap half marathon or single lap 10K, plus canicross options. Professional timing, medals and refreshments on site make it a fun off road day out.

Ras yr Aran on 28 March 2026 starts from Llanuwchllyn village hall near Bala and offers a testing 10 mile senior race with about 945 m of ascent across classic North Wales terrain. Teams and juniors welcome with limited entries.

Challenge yourself on a 32 mile loop in the Black Country, starting and finishing at Baggeridge Country Park on 29 March 2026, solo or in teams of two or four. The mostly traffic free route follows canal towpaths and tunnels and finishes wi..

Take on hilly, muddy trails at the Minster Challenge in Axminster on 29 March 2026 with 12km, 5km and family friendly 3km options. All finishers get medals, winners earn prizes and homemade refreshments will be served by Axe Valley Academy..

Take on the Feighan Fury 10 mile trail through mid Devon woods, rivers and hills on 29 March 2026, with a 5 km fun run and walk for all abilities. Expect rugged scenery, on course support and a technical event vest for Fury finishers.

Run Upcote Spring Trail is a limited entry 5 mile off road route around Upcote Farm near Cheltenham, featuring forest tracks, climbs and scenic Cotswolds views. Expect chip timing, medals for all finishers and a friendly festival vibe.

Take on the finale of the Shropshire Winter Series at Ercall Wood, a tough 8.8 km fell race climbing 519 m on scenic Ercall Hill. Pre entry or on the day entries accepted and junior races run for ages 12 to 17.

April 2026

The Aberdyfi Half Marathon will take place in Aberdyfi on Saturday 4 April 2026.

UTMB Index

Inaugural BOWUM on 4 April 2026 from Monmouth: a 30 mile circular ultra across the Borderlands of Wales. Mostly trail, with scenic castle views on parts of the Three Castles Walk and Offa's Dyke Path, three manned checkpoints and a finisher..

Run Pendine Sands on firm beach along a scenic out and back course with distances from 5k to ultra. Finishers earn bespoke medals, category winners take trophies, and the event is cup free so bring a reusable cup.

Steam to the coast then run back to Minehead along scenic trails and the ridgelines of the Quantock Hills. Choose 11 km, 11 miles or the 26.2 mile marathon as heritage steam trains ferry runners to their starts.

Discover the Vale Coastal Races on 11 April 2026 with 32.5 mile ultra, 18.5 mile and 10 mile trail options. The Wales Coast Path hugs cliffs, beaches and coves, finishing at Ogmore by Sea with marked notes and checkpoints.

Enjoy stunning coastal, woodland and dune trails at Oxwich Bay with 5 km, 10 km or a self navigated half marathon. Part of the Run The Trails Series, the event is timed and all finishers receive a medal.

Run the iconic South West Coast Path from Exmouth to Seaton, tackling about 4,000 feet of ascent and finishing on Seaton beach with a lively finish area. Choose the 22 mile solo course or team up in relay sections for a coastal challenge.

Tackle The Big Cheese, a 15 mile off road fell race across the Mendip Hills with over 2,000 feet of climbing. Enjoy a fully marked course, finishers medal and tea and cake to celebrate at the finish.

Take on the Wild Horse 200 series and run 200 miles across unforgettable Welsh trails and mountains. Pick the South Wales route finishing at Worms Head in April 2026 or the Mid Wales loop starting and ending in Machynlleth in June 2026.