Trail Running calendar near Merthyr Tydfil 2025-2026

We have found 233 Trailruns within 80 miles of Merthyr Tydfil. See below where and when you can find the races.

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

Event overview The Dyfi Half takes place in Aberdyfi on Sat 04 Apr 2026. The event offers a half marathon and a marathon (run as two laps of the half). The half is an Index Race in the UTMB 20K category. The first 20 places are offered at a..

UTMB Index

Inaugural BOWUM is a 30 mile circular trail in Monmouthshire linking Skenfrith, Grosmont and White Castle via the Three Castles Walk and Offas Dyke Path. Enjoy rolling hills, well stocked checkpoints and no time limit.

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.

Board a vintage steam train from Minehead and run back through the Quantock Hills and along rugged coastlines in Steaming to the Coast. Choose 11 km, 11 miles or a full marathon for a memorable seaside trail finish at Minehead station.

Pick 32.5, 18.5 or 10 mile coastal trail races finishing at Ogmore by Sea Village Hall. Run the Wales Coast Path past 19 beaches and miles of Glamorgan Heritage Coast cliffs, coves and rolling countryside for a memorable coastal challenge.

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.

Take on the inaugural MTC Gelert 47 mile ultra from Barmouth to Llanidloes on 16 April 2026, the third day of the MTC CYMRUN end to end. Limited field, bespoke medal for all finishers and real time tracking for supporters.

Inaugural MTC Afanc ultra on 18 April 2026 sends runners 39.7 miles along National Cycle Route 8 from Glasbury to Merthyr Tydfil. Expect rugged scenery, strict pacing and a hard earned Afanc medal at the finish.

Explore the wild beauty of the Shropshire Hills while supporting Grow Cook Learn at the Shropshire Way 80K Festival. Choose from 6.5 mile, 13 mile, 26 mile or epic 50 mile routes that climb summits, pass hillforts and ancient woodlands.

Tackle a guided 18 mile trail run along the Malvern Hills ridge, with over 1300 m of climbing and spectacular views. This group run by Running Adventures suits fit runners comfortable at steady 10 minute mile pace and includes kit guidance.

Challenge yourself on the Beast of the Beacons, a trail ultra across the Brecon Beacons from Gilestone Farm on Saturday 18 April 2026 with 10, 20 and 40 mile options. Expect steep climbs, reservoir and ridge views, wildlife sightings and fu..

Discover the Black Mountains and World Heritage landscapes around Blaenavon on this LDWA long distance walk and run. Pick 20, 30 or 50 mile routes that tackle classic climbs, quiet valleys and canal side finishes.

Take on the inaugural MTC Y Draig Goch on 19 April 2026, a scenic 35 mile stage from Merthyr Tydfil to Barry Island along National Cycle Route 8. Limited to 40 entrants, all finishers earn a Y Draig Goch medal and top athletes win bespoke t..

Martley Madness is a scenic 10 miles trail race across Rodge Hill and woodland, with challenging climbs and quiet country lanes. Finishers get bespoke medals and proceeds benefit Cardiac Risk in the Young.

Join a friendly guided trail run through Penllyn Forest on 19 April 2026, taking in rural views between Bala and Lake Vyrnwy. About 14 km on quiet forest tracks with a relaxed group pace and regular stops to enjoy the scenery.