Trail Running Calendar Wales 2026-2027

A community fell race in the Ceiriog Valley on 26 September 2026, covering 11.6 km with 425 m ascent. Entry on the day; refreshments, showers and changing facilities are provided at Canolfan Ceiriog Centre.

Guto Nyth Bran is a 9.6 km fell race near Caerphilly with 396 m of climb on a partially marked course. It takes place in late September, has a short walk from parking to the start, and charges £6 online or £8 on the day.

A fully waymarked, supported sea-to-summit ultramarathon from Caernarfon Castle to Bron y Feds Uchaf, covering 29 miles (47 km) with about 5,600 ft ascent. Pit stops, professional medical cover and GPS tracking are provided.

Trail race at Margam Country Park offering 5 km and 10 km routes through woodland with castle views. The event features chip timing, water stations, a finisher's medal and parking included with entry.

Breidden Hills is an 11.5 km fell race around Criggion, Shropshire with 790 m of ascent. The course is partially marked so navigational skills and kit checks are required, entrants must be over 18 and entry is £8.

A seven hour Time Challenge at Dare Valley Country Park offering flexible lap-based distances, finisher medals and pins, aid stations with snacks and vegan options, goody bags and free parking.

A short fell race from the Storey Arms lay-by on the A470, covering about 3.2 km with 305 m of ascent; the course requires experience and navigational skills. Entry is £2 on the day and junior races are to be confirmed.

An uphill only 10 km from Ruthin to the Jubilee Tower on Moel Famau, featuring mixed terrain and a summit finish above 550 m; transport back to town can be purchased on site.

A 32 mile trail through the Cambrian Mountains from Camp Plas near Dolanog, capped at 100 runners and fully marked with checkpoints and a 14 hour cut off. The weekend includes on-site camping, catering, live music and lakeside activities.

Experience a multi terrain race over Pen Dinas and Constitution Hill starting from the Aberystwyth Promenade. With distances for both seniors and juniors, runners face climbs on gravel, grass, and rocky paths with coastal views.

Trail races at Loggerheads Copuntry Park with a 6km loop, a 12km two-lap option and a 6km Canicross. Courses are marked and marshalled and entry fees range from £19 to £22.

A 7 hour Time Challenge at Dare Valley Country Park offering flexible distances from 3km up to 50km. The event includes themed medals, finishers' goody bags with a vegan option, aid stations, free parking and basic venue facilities.

Cadair X is a 13.1 mile mountain half marathon with 1165 m of ascent that climbs to the 893 m summit of Cadair Idris. The marked route crosses woodland, glacial lakes and technical summit terrain and a GPX file is available.

A *50 km* trail on the marked Brenig Way from Corwen to Llyn Brenig dam, with 1450 m ascent, varied upland and forest terrain, three checkpoints, required kit and GPS trackers provided.

Join the Aberfan Memorial Run in Merthyr Tydfil to honour the 1966 victims and support the Aberfan Memorial Charity. Choose 5 km to ultra on a scenic tarmac loop along the Taff Trail with flexible start times and official timing.

Trail races at Oxwich Bay with a self-navigated half marathon plus marked 10k and 5k routes. The event is postponed and a new date will be announced.

A memorial road and off road event organised by Green Events featuring a half marathon and a 12k in mountainous scenery. The race is cupless, open to those over 16, and lists online and on the day entry options.

Snowdon, Cadair Idris and Pen y Fan are linked in a 17 mile route with 2,334 m of ascent, usually completed in about 19 hours. Guided options include mountain leaders, transport between peaks and on-route support.

A guided 13 km loop around Llyn Trawsfynydd in Southern Snowdonia on runnable trails, led at a steady pace with regular regrouping stops; organised by OutFit with standard and member entry options.

A series of mountain trail races across the Black Mountains and Brecon Beacons offering four distances from 21 miles to 100 miles. Routes combine marked sections, GPS navigation and staffed checkpoints with mountain safety cover.