Trail Running Calendar Wales 2026-2027

We have found 126 Trailruns in Wales. Check below where and when you can find the races.

Take on the Red Warrior multi terrain races at Margam Country Park on 22 March 2026, with 5K, 10K and 20K routes for solo runners and canicross teams. Expect varied trails, friendly vibes and a great day out for competitors and their dogs a..

Join the Moel Famau Easter 'Piece of String' Race at Bwlch Penbarras on 28 March 2026 for a playful hilly route where the final kilometre is a surprise. Canicross starts ahead of the main pack and every finisher gets a medal and chocolate.

Guided recce of the Glyders from Capel Curig, 15 km with 1,830 m of ascent, led in small groups by Mountain Leader qualified guides. Ideal for fell runners wanting a taste of the Paddy Buckley Round on 28 March 2026.

Join a guided recce of the Paddy Buckley leg through the Carneddau from Ogwen Valley to Capel Curig. Cover 16 km and 1,245 m of ascent in small groups with experienced mountain leaders.

April 2026

The Aberdyfi Half Marathon will take place in Aberdyfi on Saturday 4 April 2026.

UTMB Index

Run the inaugural BOWUM, a 30 mile circular trail from Monmouth that links Skenfrith, Grosmont and White Castle through Monmouthshire countryside. Mostly trails, staffed checkpoints and crew support make this a scenic, supported adventure.

A fully guided and supported 42.4 mile trail run from Pentrefoelas to Bodfari with 5,325 ft of ascent, six staffed sections with checkpoints, food and first aid, and a wooden medal and certificate on completion.

Take on the iconic Pendine Sands beach course with distances from 5k up to a 32.8 mile ultra. All finishers receive a bespoke Pendine medal and category winners earn custom trophies.

Take on the Vale Coastal Races along the Vale of Glamorgan coast with 10, 18.5 and 32.5 mile routes that hug the sea and finish in Ogmore by Sea. Expect stunning seaside views, a self navigated route and the infamous Hill of Doom.

UTMB Index

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.

SheUltra is a 50 km ultrarun on Saturday 11 April 2026 in Pwllheli, UK, with a strict no-crew and no-pacers policy. The event has specific age, medical, kit, and refund rules, and recommends third-party insurance.

Summit 2 Sea Offa's Dyke Half Marathon sends runners from the summit of Moel y Parc along the Offa's Dyke Trail to a sea level finish on Prestatyn beach at the Nova Centre. Expect testing climbs, dramatic descent and sweeping coastal views.

Long course: Challenge yourself on the 28 km Llangollen fell race across the rolling hills of North Wales, featuring demanding climbs and stunning views. Based at Llangollen Leisure Centre, entries open in advance and on the day. Short cou..

Ogwen | Yr Helgi Du is a mountain Skyrunning event in Eryri offering 40K, 25k and 15K routes through the Carneddau with marked trails, Mountain Leader support and an event village at Plas y Brenin.

UTMB Index

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..

Take on the inaugural MTC Gelert 47 mile ultra from Barmouth to Llanidloes on 16 April 2026, the third day of the MTC CYMRUN end to end. Limited field, bespoke medal for all finishers and real time tracking for supporters.

Take on the inaugural MTC Afanc, a one day ultra of about 39.7 miles along National Cycle Route 8 with over 4,200 ft of ascent. Limited entry and GPS tracking make this intimate but demanding race ideal for seasoned ultrarunners.

Marked trail runs from Gilestone Farm in the Brecon Beacons offering 10, 20 and 40 mile routes, well-stocked checkpoints, enforced mandatory kit and generous cut-off times; the 40-mile course is the 20-mile route run in reverse.

Multi-distance mountain event around Abergavenny with 50 mile, 30 mile and 20 mile routes through the Black Mountains and the Forgotten Landscape above Blaenavon. Entries open 1 October 2025 and close 31 March 2026.