Trail Running Calendar Wales 2025-2026

Wild Horse 200 South Wales is the home of 200-mile racing in Wales and a life-changing ultra marathon traversing the wilds of South Wales. The route threads iconic Welsh trails, starting in Chepstow and finishing at Worm’s Head, and links Offa’s Dyke with the Beacons Way before catching the Heart Of..

MTC Gelert is a 47-mile ultramarathon from Barmouth to Llanidloes in mid-Wales. Day 3 of the Mount to Coast End to End Challenge and CYMRUN, the route stays largely on National Cycle Route 8, finishing with a short final stretch into Llanidloes. The event embraces a cup-free, self-supported ethos, w..

MTC Afanc is a 39.8-mile ultramarathon in mid-Wales, running from The River Wye Activity Centre in Glasbury, Powys to Travelodge Merthyr Tydfil. It’s Day 1 of the Mount to Coast End to End Challenge and Day 5 of Wales’ CYMRUN, with competitors sharing a single-day route along National Cycle Route 8,..

Cymoedd Sir Fynwy, staged by South Wales LDWA, is held at The Girl Guide Hall, Fairfield Car Park, Abergavenny (NP7 5TR). The event offers three distances—50 miles, 30 miles and a new 20-mile route—making it LDWA's toughest mountain challenge. The route winds through the Black Mountains and the Worl..

Beast of the Beacons is a three-distance trail-running challenge staged by Limitless Trails in the Brecon Beacons National Park, starting and finishing at Llangynidr Village Hall in Crickhowell, Wales. Runners tackle 10 miles, 20 miles or 40 miles, with elevation gains of roughly 2,026 ft, 4,219 ft..

MTC Y Draig Goch is a 47-mile ultramarathon, Day 6 of the Mount to Coast End to End Challenge within Ultra Running Ltd’s CYMRUN series. The route follows National Cycle Route 8 from the Travelodge in Merthyr Tydfil to Barry Island, with Cardiff reached along the way. Runners receive a bespoke finish..

The North Wales 50km & 100km is a scenic ultramarathon event along the North Welsh coastline, starting at the Nova Centre in Prestatyn and finishing in Bangor. The 50km route covers 53.8km with 2,700ft of ascent, reaching the beach at West Shore, Llandudno. The 100km course follows the entire North..

Endurancelife's Pembrokeshire event unfolds in Little Haven, Pembrokeshire, Britain’s coastal National Park celebrated for rugged cliffs and sea views. The trail offers four distance options: 10K (7.5 miles), Half Marathon (13.4 miles), Marathon (27.3 miles), and Ultra (34.7 miles). Courses mix gras..

Saturn Running's "The Nearly But Not Quite London Marathon - Wales" takes place at Dare Valley Country Park in Aberdare. This inclusive event offers runners the flexibility to choose their distance within a 7-hour time challenge, with laps of approximately 4.37 miles (7km) on well-maintained footpat..

Welsh 3000's Ultra Run is a guided mountain day in Snowdonia, North Wales. The route covers roughly 30 miles (about 50 km) with around 4,000 meters of ascent across the 15 Welsh 3,000-ft peaks, including Snowdon, the Carneddau and the Glyderau, and features the awe-inspiring Crib Goch traverse. It i..

The HOWUM 2026 is a 30-mile ultra in mid-Wales, starting and finishing in Llanidloes. The route forms the Heartlands of Wales circular, merging four trails—the Sarn, Glyndwr’s Way, Severn Way and Wye Valley Walk—toward the source of the River Severn and back, with no time limits. Runners pass landma..

Rasus y Bannau is a series of long-distance mountain races that start and finish in Brecon and follow circular routes through the Bannau Brycheiniog (Brecon Beacons) National Park. The event offers three distances and uses marked routes plus a GPS trace for navigation. Participants must carry a com..

Tenacious Ten Endurance Challenge takes place on Mynydd Troed, Pengenfford Common near Talgarth, Powys (LD3 0EY). This intense, all-day loop race tests endurance with a single 10-hour format and a rolling loop of about 4 miles (roughly 6.9 km) per lap, featuring steep climbs and technical downhills..

The Epona 100 is a challenging 100-mile ultramarathon held in Abergavenny, featuring a demanding 17,000 feet of elevation gain. The course offers a stunning mix of iconic trails, including Offa’s Dyke, Cambrian Way, and Beacons Way, providing runners with breathtaking mountain passes and diverse ter..

24 Hours South - The Offa's Dyke Ultra is a challenging 24-hour endurance event starting from Prestatyn on the North Wales coast, following the Offa's Dyke National Trail southwards. Participants, either solo or in teams of 2 to 4, aim to cover as much distance as possible along this scenic and dema..

Ultra-Trail Snowdonia by UTMB is part of the UTMB World Series. The event takes place in Eryri Snowdonia, North Wales, and is scheduled for 15 - 17 May 2026. The races run on trail terrain with large amounts of elevation gain. The event page notes the 2025 edition involved more than 2,800 runners f..

True Grit Trail Half Marathon takes place at Bridgend Miniature Railway Centre in Aberkenfig, Tondu, near Bridgend (CF32 0EH). The 13.1-mile route is described as epicly challenging, with mixed terrain, killer hills, a Quarry section known as the Hill of Doom, and a technical downhill forestry trail..

OTT Marathon & 10 Mile Race takes place at Parkwood Dolygaer, Merthyr Tydfil, in the Brecon Beacons. The event offers two distances: a looped mountain marathon of about 26.2 miles with steep climbs and stunning views, and a 10-mile option that follows part of the same course to Checkpoint 1 before r..

Rocky at 50 Run - Wales is a 7 hour time challenge held at Dare Valley Country Park in Aberdare. Runners may choose their own distance during the event, with a minimum official finish distance of 3 km. Finishers who complete at least 3 km receive a themed finisher medal, and distance pins are award..

Pembrokeshire Coastal Races is a four-distance trail and ultra running festival along the Pembrokeshire Coast Path in Wales, finishing at the cliff-top Dale Hill Farm Campsite overlooking Milford Sound. Distances: 100-mile ultra (St Dogmaels to Dale, ~6,300m ascent), 50-mile ultra (Porthgain to Dale..