Wales
Trail Running Calendar Wales 2026-2027
Explore the best trail runs in Wales for 2026-2027! Our updated list features 193 exciting trail runs across the region. Find your next trail run in Wales below and join the trail community at these great events!
August 2027
A 35-mile trail ultramarathon on 29 August 2027 from Chepstow Castle along the Wye Valley Trail and Offas Dyke, returning through the Tiddenham Tunnel with live music at the finish.
September 2027
Coastal ultra events on Anglesey including a 130 mile island circumnavigation and a 47 mile coastal stage, both following the Isle of Anglesey Coastal Path with checkpoints.
A 45-mile mountain ultramarathon across Snowdonia, following high trails over Tryfan and Yr Wyddfa with five checkpoints and required mountain kit.
A six day mountain race across Wales from Conwy to Cardiff covering 380 km and 16,400 m ascent, with two day route options and charity entry choices.
A 200 mile nonstop ultra along the Wales Coast Path from Portmeirion to St Davids with live tracking, checkpoints and a 120 hour cutoff.
An annual non-commercial 27.4 km fell race in the Black Mountains with five checkpoints, full kit required and online entry via Fabian4.
A sunset targeted trail half marathon in the Clwydian Hills covering about 21.4 km with 750 m ascent, aid checkpoints, canicross allowed and a planned mass finish at the school.
Five days covering 250km along the Welsh coast in a group-supported ultra based at Celtic Camping, Pwll Caerog Farm in St Davids, United Kingdom.
A 12 hour Backyard Ultra on a 4.2 mile mixed trail and tarmac loop near Crickhowell, with a reverse-direction final lap to decide male and female winners.
Coastal trail races in Abersoch, North Wales with 2K, 10K and 20K routes along the Llŷn coastline, chip timing, finish medals and a £1,000 prize fund.
A lake to mountain triathlon in Llanberis, North Wales offering standard, half, full and double distances with solo or 2 to 4 person team options.
A team relay across the Black Mountains near the Brecon Beacons of about 50 km, with teams of 5 to 10 choosing their own route and handovers.
A scenic, hilly trail half marathon in the Cothi valley with an alternative 6.5 mile route and children's races at Pumsaint Village Hall on 19 September 2027.
A continuous 295 km mountain race across Wales, with solo and team options, 13,700 m ascent and a five day time limit.
A 24 hour multi-lap endurance race on a 5 km coastal trail at Abersoch, with solo and two-person relay options and on-site support.
A fully waymarked, supported Sea to Summit ultramarathon from Caernarfon Castle to Yr Wyddfa and finish at Rhyd Ddu, covering 47 km with about 5600 ft ascent.
Coastal trail races on the Gower Peninsula on 25 September 2027 with 50, 34 and 26 mile routes along the Wales Coast Path, GPS navigation and staffed checkpoints.
October 2027
SAS Endurance in Talybont-on-Usk on 1-2 October 2027 offers full 64 km and half 32 km navigational routes with guided and self navigation options.