Trail Running Calendar Wales 2026-2027

Take on Reservoir Roundabout, an annual 12 or 20 miles walking or running challenge across the wild Elan and Claerwen Valleys from Elan Valley Visitor Centre. Non competitive and volunteer run, proceeds support local charities.

Explore Eyarth Rocks and Graig Wyllt on a guided 12 km trail run from Pwll Glas, with varied terrain and gentle climbs. Multiple group stops for views make this a social, scenic run ideal for nature lovers.

Tackle scenic mixed terrain around Cosmeston Lakes in the CF64 Winter Race, a 6.4 mile off road challenge through woodland, meadows and trails. Join fellow runners on Sunday 18 January 2026 for a spirited winter test of fitness.

Join the West Glamorgan XC League Round 3 at Margam Park, Port Talbot on 18 January 2026 for a 5 mile cross country challenge hosted by Run4All Neath. Pre registration is required and race numbers will be issued by club to team captains onl..

Tour De Yr Wyddfa on 24 January 2026 from The Heights Llanberis is a tough 43.5 km mountain challenge with 2327 m ascent in North Wales. Half, pair and relay entries available; strong winter skills and full mandatory kit required.

Spice Up Your Run Wales on 24 January 2026 at Dare Valley Country Park is a fun themed 7 hour time challenge where runners choose distances from 3km up to ultra, with optional fancy dress. Enjoy scenic trails, on course aid, and a Spice Gir..

Ras Tarrenhendre Fell Race in Abergynolwyn, Wales on 31 January 2026 is a rugged 6 mile test with about 2000 ft of ascent across ridges, forestry and old slate quarries. Expect steep climbs, exposed summit running and a moorland descent.

The fourth race of the West Glamorgan XC League takes place on 1 February 2026 at scenic Kenfig Nature Reserve. Tackle 4.2 miles of classic cross country terrain with Cornelly Striders hosting; entries are limited so sign up from 19 January..

Take on the Sorbrook Slog on 22 February 2026, a lively 7 mile multi terrain race through footpaths, fields and gullies around Sorbrook and Sluvad in Cwmbran. Enjoy marshals on course, post race tea and cake and a finishers goodie bag.

Join a weekend fell and trail running retreat in the Black Mountains, Wales from 27 Feb to 1 Mar 2026 at Dinas Castle Inn. Guided runs on the Dragons Back ridge, skills coaching and bunkhouse accommodation make for an inspiring weekend for..

Castle 2 Castle Ultra is a 32 mile ultramarathon from Powis Estate to Caffi Wylfa, taking runners over fast paths and rolling footpaths with scenic castle views. Finishers get a celebratory plate and goodies and top three men and women win..

Run a scenic 70k along the Taff Trail from the Brecon Beacons to Nantgarw, passing reservoirs, waterfalls and historic sites. The event includes coach transfer to the start, checkpoints, timing and a finisher medal.

Tackle a rugged 75 km mountain ultramarathon from Brecon to Cardiff, summiting Pen y Fan, Cribyn and Fan y Big over wild ridges and forests. A 26.2 mile Taff Xtreme option covers the second half; both are unmarked and GPS navigated.

Celebrate St David's Day with the Dragon Run at Dare Valley Country Park on 1 March 2026, choose from 3 km to ultra distances or tackle a flexible 7 hour time challenge. Enjoy scenic footpaths, aid stations, medals and vegan goody bags.

Take on the Loggerheads Trail 5 km or 10 km at Loggerheads Country Park on 7 March 2026, including a 5 km canicross option and member entries. Enjoy varied riverside and technical trails, a few challenging steps, and friendly on site suppor..

Tackle a scenic but testing 6.8 km fell course around Dolgarrog with 417 m of climb, hosted at Canolfan Porthlwyd. Entry on the day; minimum age 16 makes it perfect for adventurous runners.

Trail races in the Cambrian Mountains at Nant Yr Arian include a half marathon, 10 km and junior races on road free, waymarked routes. Run by Aberystwyth Athletic Club, the event supports local charities and offers food and race merch.

Canicross on Saturday and trail races on Sunday at the private Brynkinalt Estate in Chirk, with scenic approx 5k and 10k routes over footpaths, grass and climbs. Festival vibes, photos and results add to the experience.

Explore the rugged Black Mountains at the Beast of the Blacks on Saturday 14 March 2026 with 11 miles, 20 miles or 40 miles options to suit any trail runner. Expect fully marked routes, generous support and a welcoming canicross friendly at..

Join the Dashing Dog Charity Run in March at Dare Valley Country Park for a scenic 7 hour time challenge from 3 km to ultra. Run on well kept trails with aid stations and free parking while supporting local dog rehoming charities.