Trail Running Calendar Wales 2025-2026

We have found 118 Trailruns in Wales. Check below where and when you can find the races.

Take on the Paddy Buckley Recce Fun Run across the Glyderau from Capel Curig on 28 March 2026. This guided 15 km mountain run with 1,830 m ascent is led by experienced mountain leaders and offers a taste of the legendary Paddy Buckley Round..

Join a guided Paddy Buckley recce across the rugged Carneddau from Ogwen Valley to Capel Curig, a challenging 16 km with 1,245 m of ascent. Small groups are led by Mountain Leader qualified runners who offer route advice.

April 2026

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.

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

Take on 5k, 10k, half marathon, marathon or ultra across the wide sands of Pendine with starts by Barnacles Cafe on 5 April 2026. Flat, well marked out and back loops, finisher medals and a friendly seaside vibe make this a memorable coasta..

Vale Coastal Races is the Vale of Glamorgan Ultra and Coastal Races, three trail distances along the Vale of Glamorgan coast in south Wales. The Ultra covers 32.5 miles along the Wales Coast Path from Penarth Pier to Ogmore-by-Sea; the Vale..

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 rugged Ogwen Valley and Carneddau skyline with challenging mountain routes, including a 40K that climbs the Glyderau ridge. Festival vibes at Plas y Brenin with on course support. Tickets are sold out.

UTMB Index

The Summit 2 Sea - Offa's Dyke Half Marathon is a challenging spring race covering approximately 13.8 miles from the summit of Moel y Parc to the coast at Prestatyn. Runners will ascend over 2,450 feet, starting at over 1,300 feet above sea..

The Llangollen Fell Race, hosted by Run Free Fell Runners in North Wales, is a popular annual event featuring two scenic routes: a challenging 17-mile course with 3000ft of elevation and a shorter 10-mile route ascending 1969ft. Both start..

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 MTC Gelert, a scenic one day 47 mile ultra from Barmouth to Llanidloes along National Cycle Route 8. With just 40 places, strict cutoffs and a bespoke finisher medal, this tough Welsh challenge is not to be missed.

Take on a 39.7 mile ultra along NCN 8 from Glasbury to Merthyr Tydfil in Mount to Coast Afanc. Only 40 places, mandatory kit and live tracking make this a rugged test of endurance that rewards every finisher with an Afanc medal.

Explore the Brecon Beacons on marked trails with 10 mile, 20 mile or 40 mile routes and full support on course. Well stocked checkpoints, a warm finish and canicross friendly rules make this a rewarding spring challenge.

Explore upland trails from Abergavenny through the Black Mountains and Forgotten Landscape World Heritage area with 50, 30 or 20 mile options. Routes climb Skirrid, pass Llanthony and finish on the Monmouthshire and Brecon canal.

Experience the first edition MTC Y Draig Goch, a scenic 34.8 mile ultra from Merthyr Tydfil to Barry Island on 19 April 2026. Entries are limited and finishers earn a medal, so sign up for a memorable Welsh coastal challenge.

Take on a scenic 8.6 mile loop around Trawsfynydd Lake in Snowdonia, a mixed tarmac and trail course with one testing hill and 175 m of ascent. All entry funds support the volunteer South Snowdonia Search and Rescue Team.

Experience wild coastal trails around Little Haven in Pembrokeshire Coast National Park on 25 April 2026, with distances from 10K to ultra to suit every trail runner. Enjoy fully marked courses, electronic timing and a lively finish area wi..

UTMB Index

The Cadair X will take place in Tywyn on Saturday 25 April 2026. You can run 13 miles.

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..