Trail Running Calendar Wales 2026-2027

We have found 128 Trailruns in Wales. Check below where and when you can find the races.

The Montane Dragon's Back Race will take place in Conwy from Monday 7 September 2026 to Friday 11 September 2026.

UTMB Index

A guided mountain run on 12 September 2026 across the 15 Welsh 3,000 ft peaks in Snowdonia, covering about 30 miles with 4,000 m of ascent. Not a race; transport, guide and support vehicle included, minimum age 18.

A lap-based ultra in Bridgend, South Wales, on a 10-mile loop offering 50-mile (5 laps) and 100-mile (10 laps) options with aid stations, crew access, and set time limits.

Brutal Extreme Triathlons in Llanberis, North Wales challenge athletes with a lake swim, tough open road bike laps and a final climb of Snowdon via the Llanberis Path. Enter solo or as a relay team and test your limits on wild terrain.

A 13.1 miles road half marathon in Abersoch on the Llyn Peninsula that finishes with the final kilometre on the beach. The race uses ChronoChip timing, has multiple drink stations, on-course marshals and a beach finish with music and medals..

A hilly trail event in the Cothi valley offering a 13 mile half marathon, a 6.5 mile alternative and a kids race, held at Pumsaint Village Hall with online entry and published route and results.

Three long-distance trail races follow the Wales Coast Path around the Gower Peninsula: *50 miles*, *34 miles* and *23 miles*. Routes use Coast Path signage, GPS traces and manned checkpoints with multiple refreshment points and tracking.

Run through scenic Margam Country Park with castle views in this chip timed trail event offering 5K and 10K options. Fully marked courses, water stations, finisher medal and award ceremony make it perfect for racers and fun runners alike.

October 2026

Take on the Town to Tower, an all uphill 10 km challenge from Ruthin to the Moel Famau tower, finishing above 550 m with sweeping views and varied terrain. Expect steep gullies, marshalled support and a truly rewarding summit finish.

A 32 mile trail event from Camp Plas in the Cambrian Mountains, capped at 100 runners, on a fully marked route with staffed checkpoints, on-site camping and on-course support. The event enforces a comprehensive mandatory kit list and a 14 h..

Take on the scenic Twin Peaks & Ras Consti in Aberystwyth, with a testing 11.7 kilometre senior route over Pen Dinas and Constitution Hill. Starts and finishes on the promenade with great views, cafes and family friendly junior races.

Enjoy autumn trails at Loggerheads Country Park on 17 October 2026 with fully marked, marshalled loops and quiet early starts. Choose 6 km, 12 km, or a 6 km canicross for a relaxed and scenic trail morning.

Take on the Brenig Way 50k, a scenic 50 km trail from Corwen to the dam at Llyn Brenig that winds through the Dee Valley, crosses into Conwy and climbs into Clocaenog Forest. Expect rugged climbs, technical descents and sweeping upland view..

The Welsh Three Peaks Challenge links Snowdon, Cadair Idris and Pen y Fan across North, Mid and South Wales, covering 17 miles and 2334m of ascent, usually within 24 hours. Guided events and private options are available.

A series of linear mountain trail races across the Brecon Beacons and Black Mountains, offering four distances from 21 miles to 100 miles, marked checkpoints, GPS navigation requirements and drop bag options.

UTMB Index
November 2026

Trail races of 10k and Half Marathon through Newborough Forest and Llanddwyn with coastal views to Eryri. The event includes an event village, on course support, chip timing and a bespoke finisher memento.

Coastal trail running at Oxwich Bay on 7 November 2026 with 10K, half, marathon and ultra options across cliffs, dunes and beaches. Fully marked courses feature electronic timing, medals and on-site amenities.

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Three trail races around Talybont on Usk on 7 November 2026, including a 49 mile ultra with an out and back to Pen y Fan. Routes combine trail, mountain, canal and road terrain with notable elevation.

Held in Porth Penrhyn, Bangor on 14-15 November 2026, Slate Trail Ultra offers two trail races of 147 km and 80 km along the Snowdonia Slate Trail with substantial elevation gain and organised aid stations.

UTMB Index

Trail Revolution stages three waymarked trail races at Margam Park on woodland paths, offering 5 km, 10 km and half marathon distances with checkpoints, GPS routes and parking included in the entry.