Trail Running Calendar Wales 2025-2026

The Beast of Bryn is a challenging trail running event held in the scenic Afan Forest Park near Port Talbot, South Wales. Established in 2011 and managed by the Bryn Residents Action Group (BRAG), the race offers two distances: a 6.5-mile (10.5 km) route with 288 meters of climb, and a longer 10.5-m..

The Black Cattle Ultra Gwartheg Duon is a challenging trail ultra event held in South Wales, starting at either Llanthony Priory or Abergavenny and finishing in Cardiff. Participants can choose between two distances: 44 miles (71 km) or 33 miles (53 km). The course follows the scenic Cambrian Way, t..

The Crickhowell 10km is a new running event set in the scenic Brecon Beacons National Park, starting and finishing at Llangattock near Crickhowell. The race features a flat, out-and-back course along the Brecon & Monmouthshire canal, with a turnaround point at Gilwern village. Designed for runners l..

Ring O' Fire is a coastal ultra marathon event held on the island of Ynys Môn, offering challenging endurance races including the Ring O’ Fire 130 and the Firelighter 50. Participants embark on ultimate coastal endurance challenges, running through beautiful and rugged coastal terrain. The event fea..

Saturn Running's "Will Run For Ice Cream" event takes place in the scenic Dare Valley Country Park, Aberdare, Wales. This inclusive 7-hour time challenge allows participants to run or walk as many laps as they wish on a well-maintained 4.37-mile (7km) loop, with shorter options for younger runners...

The Montane Dragon's Back Race® is a legendary and grueling 6-day ultra running event held annually in Wales. Covering approximately 380 kilometers with 16,400 meters of ascent, it challenges participants to traverse the entire spine of Wales, starting at Conwy Castle and finishing at Cardiff Castle..

The Dee Way 120 is an ultra-distance running event that spans approximately 120 miles along the scenic River Dee, from Llanwchllyn to Prestatyn. Participants can choose between the full race or a shorter 60-mile option, which starts at Corwen. The event features a 50-hour time limit for the 120-mile..

The Yr Wyddfa Ultra 50 is a challenging 45-mile ultramarathon held in Snowdonia National Park, Wales, starting and finishing in the picturesque village of Betws-y-Coed. Featuring 3,254 meters of ascent, the mountain trail course includes iconic landmarks such as Heather Terrace on Tryfan, the summit..

The Yr Wyddfa Ultra 100 is a challenging 102-mile ultramarathon held in Snowdonia National Park, Wales, featuring 5,788 meters of ascent across stunning mountainous terrain. The race starts and finishes in Betws-y-Coed and includes 10 well-supported checkpoints offering refreshments and medical aid...

The RunThrough Snowdonia Sea2Sky Trail Races, held in September 2025 at Barmouth, UK, offer two challenging distances: 25k and 53k. Set in the stunning landscape of Snowdonia, participants can enjoy breathtaking trail views while tackling a well-marshalled course. The event features chip-timed resul..

The RIDUM 2025 is a challenging 30-mile ultra marathon set along the Rhymney Valley Ridgeway Walk in South East Wales. Participants will traverse varied terrain, including lanes, trails, and woodland, with a total elevation of 4,252 feet. The route features notable points such as Mynydd Machen, the..

The 2 Hillforts Hill Race is an exciting running event set to take place in 2024, starting and finishing at Plas Dolben Farm in Llangynhafal. Participants will tackle a challenging course that spans just under 9 miles, featuring a significant ascent of 2500 feet as it navigates the scenic Hillforts..

The Snowdonia Mountain Skills Weekend, hosted by Running Adventures, is a challenging trail running event held in the Nantlle Valley near Snowdon, UK. Scheduled for September 12-14, 2025, it offers advanced trail runners an immersive experience in rugged mountain terrain with steep climbs, scramblin..

The Dare Valley Hateful 8 (Bwlfa Rise) is an endurance running event held at Dare Valley Country Park in Aberdare, South Wales. Participants tackle a challenging 4.8-mile loop featuring technical climbs, mountain views, and fast descents. The event lasts 8 hours, during which runners aim to complete..

The Trails & Tarmac Backyard Ultra, organized by Limitless Trails, takes place near Crickhowell in the scenic Black Mountains, Powys, UK. This endurance event features a 4.2-mile loop combining equal parts trail and tarmac, with mostly flat terrain, one gradual climb, and a short steep section, allo..

The The Brutal Extreme Triathlon will take place in Llanberis on Saturday 20 September 2025.

The Abersoch Half Marathon is a scenic 13.1-mile race held in the charming seaside village of Abersoch on the Llyn Peninsula, North Wales. The course primarily follows roads through the villages of Llanengan, Llangian, and Sarn Bach, culminating in an exhilarating final kilometer along Abersoch Beac..

The Fraggle Run in Aberdare, hosted by Saturn Running, is a 7-hour time challenge event set in the scenic Dare Valley Country Park. Participants can choose their distance, starting from a minimum of 3km, with laps measuring approximately 4.37 miles (7km) on well-maintained footpaths offering beautif..

The Maverick X Series Afan Forest 2025 is a trail running event held in Afan Forest Park, South Wales, known for its scenic woodland and challenging terrain. Participants can choose from four routes: Ultra (50 km, 1133 m elevation), Long (42 km, 970 m), Middle (25 km, 625 m), and Short (10 km, 232 m..

The Pumsaint Trail Half Marathon is a scenic and challenging race held in the beautiful Cothi Valley near Llanwrda, United Kingdom. Scheduled for September 21, 2025, the event features a hilly half marathon course that offers runners a rewarding trail experience. Alongside the half marathon, there i..