Trail Running Calendar Wales 2025-2026

The Beast of Llangattock is a scenic but rugged trail race in Powys offering distances from 10 km to 51 km. Expect limestone views, stiff climbs, well stocked aid and strict mandatory kit to keep runners safe.

Tackle the Black Cattle Ultra in South Wales, a rugged point to point adventure finishing near Castell Coch. Choose 33 mile or 44 mile routes through mountains, wooded vales and villages, organised by the Ridge Runners community.

Explore the wild Ynys Môn coastline with the Ring O' Fire series, from the coastal ultramarathon Ring O' Fire 130 to the shorter Firelighter 50. Entries for 2026 open 1 October.

The RIDUM is a 30-mile ultra marathon held in South East Wales, following the Rhymney Valley Ridgeway Walk. This challenging trail run features 4,252 feet of elevation, taking participants across ridge tops around the Caerphilly basin with..

Take on the Yr Wyddfa Snowdon Ultra 50, a rugged 45 mile mountain ultramarathon across epic Snowdonia scenery to the Snowdon summit. Based in Betws y Coed on 5 September 2026, the race offers live tracking, checkpoint support and finisher m..

Take on the Yr Wyddfa Snowdon Ultra 100, an epic mountain ultramarathon of around 100 miles starting and finishing in Betws y Coed. Rugged trails, strict kit rules, live GPS tracking and buckle awards await in scenic Snowdonia.

Run the spine of Wales in the legendary Dragon’s Back Race, a six day, 380 km ultra through rugged mountain terrain from Conwy Castle to Cardiff Castle. Choose the full route or shorter stage options to suit your adventure spirit.

Run the classic Welsh 3000s across Snowdonia's 15 peaks in an epic guided mountain run covering about 50 km and 4,000 m of ascent. Enjoy expert mountain leaders, support vehicle and food stations as you tackle this iconic route.

The Relentless is a looped ultra near Bridgend on 18 September 2026 with 50 mile and 100 mile options over repeated 10 mile laps and big climbing. Limited to 25 runners per distance, the race features a well stocked hub for aid and crew.

Take on Trails & Tarmac Backyard Ultra in Crickhowell, a scenic 4.2 mile loop split between trail and tarmac. Run an hourly loop until you are the last runner standing, with medals awarded from 32 miles.

Brutal Extreme Triathlons in Llanberis, North Wales, combine a Llyn Padarn lake swim, a 28 mile bike loop over Pen y Pass and a mountain finish on Yr Wyddfa via the Llanberis Path. Solo and relay entries welcome for adventurous athletes.

Join the 361° Abersoch Half Marathon along the scenic Llyn Peninsula, finishing with a memorable final kilometre on Abersoch Beach. Enjoy a festival finish with a medal, tech tee and lively music as part of the Abersoch Triple Crown.

Race scenic trails at Margam Country Park with castle views on a 5K or 10K loop. Fully marked and marshalled with chip timing, water stations and a finisher medal, ideal for new and experienced runners.

A challenging 10 km uphill only race from Ruthin to the Jubilee Tower on Moel Famau, finishing above 550 m with sweeping hilltop views. Open to walkers and hill runners, it pairs a tough ascent with a memorable mountain finish.

Take on the Loop 32M Ultra, a 32 mile trail through remote Cambrian Mountains with lakeside views and sweeping ridgelines. Based at Camp Plas on 10 October 2026 and limited to 100 runners, this scenic ultra pairs rugged trails with campsite..

Twin Peaks & Ras Consti in Aberystwyth is a scenic coastal race mixing paths, roads and rocky climbs. Seniors run 11.7 km with climbs of Pen Dinas and Constitution Hill while juniors race shorter routes finishing on the promenade.

Tackle the Brenig Way 50 km trail, a scenic endurance run from Corwen to the dam at Llyn Brenig through forests, riverside paths and technical climbs. Electronically timed with GPS trackers and aid stations, it is a rugged yet well supporte..

Take on NIGHT DESCENT 32 Ultra, an overnight staged 32 miles around Bridgend split into four progressive stages. With aid stations, gear drop and a buzzing base camp, this event blends challenge and camaraderie under headlamp light.

Take on the Nightmare Before Xmas Trail ½ Marathon on 19 December 2026 at Bridgend for a festive, muddy trail challenge with technical climbs and scenic road sections. Limited to 70 places, with a bespoke medal, mince pies and prizes for be..