Wales
Trail Running Calendar Wales 2026-2027
Explore the best trail runs in Wales for 2026-2027! Our updated list features 163 exciting trail runs across the region. Find your next trail run in Wales below and join the trail community at these great events!
April 2027
Marked trail event in the Brecon Beacons offering 10, 20 and 40 mile routes with marshalled checkpoints, GPX routes and a mandatory kit list.
A last-person-standing Backyard Ultra at the Medieval Village, Cosmeston Lakes: runners repeat a fixed 6706 m loop each hour until one athlete completes one more loop than anyone else. Camping and on-site facilities are provided.
Coastal ultra routes from Prestatyn to Bangor with 50 km (54.8 km) or 100 km options, aid stations, tracking, chip timing and mandatory kit checks.
Point to point trail races along the Vale of Glamorgan coast on 24 April 2027, with 32.5, 18.5 and 10 mile routes finishing at Ogmore by Sea.
Coastal trail event at Little Haven on 24 April 2027 offering 10K, half, marathon and ultra routes over grass, trail and beach, part of the Endurancelife season leaderboard.
Trail Last Man Standing race with repeated 5.33 km forestry laps, each with over 140 m ascent, held in Llandegla, Wales from 30 April to 2 May 2027.
The HOWUM in Llanidloes on May 1, 2027 offers Full and Half event options; entries are currently marked sold out with a waitlist listed.
May 2027
A 5k obstacle course at Coopers Field, Bute Park, Cardiff, with tarmac paths and grassy sections that can get boggy after rain. The event raises funds for Cancer Research UK and uses staggered wave starts; participants must be 13 or older.
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 multi-discipline race from Abersoch beach to Snowdon and back, covering 115 km with a sea swim, road cycling and a mountain ascent via the Watkin Path.
A Welsh trail event with 100 mile and 100 km routes along Offa's Dyke Cambrian Way and Beacons Way, supported by aid stations and volunteer crews.
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.
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.
A muddy 5k obstacle course through Singleton Park with mixed terrain, staggered waves, an age limit of 13+, and on-site facilities including toilets and refreshments.
Looped mountain trail in the Brecon Beacons on 15 May 2027 offering a Marathon and a 10 Mile route across Pen y Fan, Fan y Big and Tor y Foel.
Two waymarked routes from Trehafod Community Village Hall through the Rhondda Valleys with checkpoints, refreshments and a completion certificate.
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 trail running event in May 2027 along the way-marked Heart of Wales Line Trail from Llandrindod Wells to Craven Arms, offered in 50 miles, 26 miles, and 16 miles distances.