Wales
Trail Running Calendar Wales 2026-2027
Explore the best trail runs in Wales for 2026-2027! Our updated list features 184 exciting trail runs across the region. Find your next trail run in Wales below and join the trail community at these great events!
November 2026
Three trail races around Talybont On Usk on 7 November 2026, from a 13 mile half to an approximately 49 mile ultra that includes an out and back to Pen y Fan.
Out-and-back 10.3 km fell race from Llanfachreth with 562 m ascent, unmarked upper section and mandatory kit; includes a 3 km junior race and team entries.
30 mile ultra through the Brecon Beacons, climbing to Pen y Fan with 3750 ft gain, five checkpoints and a six hour mid race cut off; limited to 200 entries on 7 Nov 2026.
A winter coast to coast ultra on the Llŷn Peninsula on 7 November 2026, with solo 37.5 mile and team of four entry options, organised by Pen Llŷn Ultras and offering age 16 plus eligibility and several entry extras.
A 15.7 km fell race with 950 m ascent around the Clwydian Hills based at Cilcain Village Hall; navigation skills and prior experience are required.
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.
Fully marked trail races at Margam Park including a half marathon and a 10k, running through woodland, parkland and the deer park with coastal views; entries include parking, timing, a medal and download photos.
Trail Half Marathon Wales runs in Margam Country Park and Forest on 14 November 2026, offering a fully marked half marathon and 10k on forest trails with checkpoints, safety cover, and included car parking.
A guided 55km route on Anglesey taking in three of the island's highest tops, with over 2000 m ascent, checkpoint support and a wooden finishers medal.
A 16.1 km fell race around Penmaenmawr with about 594 m of ascent, based at Capelulo Village Hall. The route is partially marked and requires navigation; entry is online with a £12 fee.
Timed lap event in Cardiff Bay offering flexible start times and distances from one 5.3 km lap up to multi lap ultra within a 7 hour limit.
The Smurf Run at Dare Valley Country Park is a seven hour Time Challenge on well maintained park paths, with distances from 3 km up to 50 km. Finishers receive themed medals, distance pins and a goody bag with vegan options.
A trail half marathon at Loggerheads Country Park with solo and teams of three relay options, varied terrain and feed stations each 7 km lap.
A short fell race of 5.7 km with 485 m of climb on Blorenge near Llanfoist, Abergavenny. Mostly unmarked up-and-down route with steep technical terrain; basic navigation and full kit are recommended.
Two trail distances on 28 November 2026 around Machen, featuring wooded single track, ridgeway exposure and steep climbs. The half course is fully marked while the marathon requires self navigation with marshals at key points.
Timed multi-lap event at Parc Taf Bargoed offering distances from a single 5.3 km lap up to an ultra, with bespoke medals and a no medal entry option.
The final race of the 2026 RTT Series takes place in Afan Forest with separate 5 km and 10 km routes from Bryn Bettws Lodge. The event features chip timing, finisher medals, marked and marshalled routes and water stations.
A club organised race at Blaenwern Holiday Centre in Llanybydder on 29 November 2026 covering 6.5 miles on mixed surfaces; junior and senior categories are included and past results are archived online.
A lap based road event at Rhydycar, Merthyr Tydfil, on a 5.3 km AUKCM certified tarmac circuit along the Taff Trail. Runners choose how many laps to complete within a seven hour limit and can opt for a no medal entry.