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!
May 2027
A single loop trail ultramarathon from Dol Llys Farm through the Pumlumon massif and Heartlands of Wales, with a shorter HOWUM HALF option.
A guided mountain run on 1 May 2027 crossing all 15 Welsh 3,000 ft peaks, roughly 30 miles with 4,000 m ascent, with guide, transport and food included.
Race for Life at Coopers Field, Bute Park offers 10k, 5k and 3k routes on mixed grass and tarmac while raising funds for Cancer Research UK.
24 hours solo and team ultra along the Offa's Dyke National Trail from Nova Centre Prestatyn with GPS tracking, six checkpoints and preplaced drop bags.
A Welsh trail ultra with a 100 mile route from Abergavenny and a 100 km option from Talgarth to Abergavenny on Offa's Dyke and other long-distance paths.
A trail marathon around Cardiff with about 1,300 m of climbing, mixed off-road terrain, partial self-navigation, checkpoints and support during the Radyr and Morganstown Festival.
A 52 km fell running event around Preseli with 2150 m of ascent, part-marked route, feed stations and a goody bag; pre-entry required.
Trail races around Moel Famau in the Clwydian Range offering Marathon, Half Marathon and 10k on hilly off-road routes. Checkpoints provide refill taps, mandatory safety kit is required and canicross entries are accepted.
Off road 10 km alongside the Llangollen Canal with a kids 1 mile race; chip timed event with finisher medal included and a feeding station on course.
Mountain trail event in Eryri, North Wales, offering races from 25 km to 163 km and part of the UTMB World Series.
Pretty Muddy 5k at Singleton Park, Swansea is a mud obstacle run on grass and paths with staggered waves, Blue Badge parking about 700 m away, and adult and child entry prices.
Mountain marathon and 10 mile trail race across the Pen y Fan range at Parkwood Outdoors, Merthyr Tydfil, with marked checkpoints and variable mountain terrain.
Two route options, 26.5 miles and 16 miles, start from Trehafod Community Village Hall across the Rhondda Valleys with checkpoints, refreshments and a hot meal at the end.
An uphill only 10 km race from Ruthin to the Jubilee Tower on Moel Famau, finishing above 550 m with varied terrain and an optional bus return to Ruthin.
Women only 10 km trail event at Margam Country Park on 16 May 2027 with chip timing, finisher medal, medical support and free parking.
Trail races at Margam Country Park on 23 May 2027 with 5 km, 10 km and half marathon courses, chip timing, finishers' kit and canicross options.
A multi-stage event at Dare Valley Country Park where runners complete five Pure distances within 24 hours, with separate and combined results. Distances include 5k, 10k, 50k, half marathon and marathon.
A fully supported inaugural trail race on Saturday 29 May 2027 along the Heart of Wales Line, offering 50, 26 and 16 mile options.
June 2027
Mountain fell race in Eryri with long and short unmarked courses, mandatory kit, checkpoint tracking and a summit finish on Yr Wyddfa.