Trail Running calendar near Merthyr Tydfil 2026-2027

We have found 273 Trailruns within 80 miles of Merthyr Tydfil. See below where and when you can find the races.

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.

Family friendly event at Telford Town Park with 2.5K and 5K routes, a finisher teddy for each participant, and a post-race teddy bears picnic. The event raises funds for Birmingham Children's Hospital and encourages fundraising.

April 2026

A tough trail half marathon in Aberdyfi with 850 meters of climbing. The scenic route runs through the UNESCO Dyfi Biosphere and along the Wales Coast Path. It's a UTMB Index Race for the 20K category.

UTMB Index

The BOWUM is a 30-mile ultramarathon exploring the historic Welsh borderlands. The circular route from Monmouth passes three ancient castles and features a mix of trail and road. This inaugural event offers supported checkpoints and encoura..

A beach race day at Pendine Sands on 5 April 2026 offering 5k, 10k, half, full and ultra distances on a firm out-and-back sand course with water stations, cup-free provisions, finishers medals and trophies for category winners.

Trail running event from Minehead using a steam train to the start points. Distances include **11 km**, **11 miles** and a full marathon returning to Minehead across the Quantock Hills and coastal paths.

Three point to point trail races on 11 April 2026 along the Vale of Glamorgan coast, including a 32.5 miles ultra and 18.5 and 10 miles options. Routes follow the Wales Coast Path with marked navigation, checkpoints and event bus transport.

UTMB Index

The first race of the 2026 Run The Trails Series on Wales' Gower Peninsula. Choose from three distances on a multi-terrain coastal course. The half marathon requires self-navigation through sand dunes, woodlands, and coastal paths.

The Exe to Axe Race is a 22-mile coastal running adventure along the Jurassic Coast. Organized by Sidmouth Running Club, it takes place in April 2026.

The Big Cheese is an off road fell race in Cheddar, Somerset, covering 15 miles across the Mendip Hills with over 2,000 ft of climb. Take on a fully marked course and enjoy a finisher's medal plus tea and cake at the end.

Tackle the Kymin Dash, a 7 mile road and trail race from Monmouth that climbs to the Round House for panoramic views before descending through fields and bluebell filled woodland. Enjoy a lively finish at Monmouth School Sports Club with Ki..

A 200 mile trail ultramarathon across South Wales, the Wild Horse South Wales 200 follows Offa’s Dyke, the Beacons Way and the Wales Coast Path, starting in Chepstow and finishing at Worm’s Head with aid stations and volunteer support along..

A 47 mile ultra from Barmouth to Llanidloes that follows National Cycle Route 8 and forms Day 3 of the six day CYMRUN series. Entrant numbers are limited and a 4 mph minimum average pace is enforced.

A single-day ultra of about 40 miles along National Cycle Route 8 from Glasbury to Merthyr Tydfil. It is Day 5 of the Mount to Coast CYMRUN, limited to 40 competitors, with mandatory kit requirements and time cut-offs based on a 4 mph minim..

The Shropshire Way 80K Festival in April offers a series of trail challenges in the Shropshire Hills. Choose from an 80km epic, a 42km marathon, a half marathon, or a 10km event. It's a fundraiser supporting local education and charity work..

A guided 18 mile trail run across the Malvern Hills meeting at North Quarry Car Park in Great Malvern on Saturday 18 April 2026. The route visits ridge summits with over 1300 m of ascent and returns via hillside and woodland trails.

The Beast of the Beacons offers trail runs of 10, 20, or 40 miles through the Brecon Beacons National Park. With marked courses, supported checkpoints, and a canicross option, it provides a demanding day on varied terrain. All finishers ear..

Explore the Black Mountains on this challenging LDWA event. Choose from three distances across a route featuring epic climbs and a finish along the Monmouthshire & Brecon canal. The event starts from Abergavenny and is known for its tough t..

A one day ultra from Merthyr Tydfil to Barry Island following National Cycle Route 8. The published route is 34.8 miles, it is Day 6 of the CYMRUN series, limited to 20 entries plus 20 CYMRUN competitors, with mandatory kit and GPX for entr..

Martley Madness is a 10-mile trail and country lane race through the Worcestershire countryside. The undulating route features woodland, Rodge Hill, and part of the Worcestershire Way. All finishers get a medal and celebratory cake at the f..