Trail Running Calendar Wales 2025-2026

Event information Celtic Trail Races is a trail running event based at Dare Valley Country Park, Aberdare, Rhondda Cynon Taff. Routes go through the Afan Forest and the Rhigos mountain range and finish on sections of the Coed Morgannwg Way..

Join A Nightmare Before Xmas Trail Half Marathon in Bridgend for a festive, spooky run across muddy, technical trails, steep climbs and rewarding views. Only 50 spots with mulled wine, mince pies, a medal and best fancy dress prize.

The Moel Famau Festive 'Piece of String' Race is a unique running event held on the last Saturday before Christmas at Bwlch Penbarras. Participants can expect a surprise distance and route, ranging between 6 and 12 kilometers, which will be..

Join the Christmas Carol Bobble Hat Run at Dare Valley Country Park, a festive seven hour time challenge where you can run or walk as far as you like. Scenic laps, on course snacks, and a bobble hat for finishers make it a fun end of year e..

Scenic non competitive walking and running across the upland Elan and Claerwen Valleys. Choose 12 or 20 miles, follow partly waymarked routes using map skills, enjoy refreshments and a finisher certificate, and support local charities.

The Cardiff Trail 10k is an exciting running event set against the stunning backdrop of Castell Coch. Scheduled for January 18, 2026, this newly introduced race offers participants a unique blend of competition and natural beauty, making it..

Saturn Running's "Spice Up Your Run - Wales" is a fun and inclusive running event held at Dare Valley Country Park in Aberdare. Participants can walk or run a minimum of 3km, with options to complete laps of approximately 7km each, allowing..

Tackle the wild slopes of Yr Wyddfa in this challenging trail race around Snowdon, with a 43.5 km course and 2327 m of ascent. Whole, half, two person relay and pair team options welcome runners seeking a true winter mountain test.

Take on Trails & Tarmac Backyard Ultra in Crickhowell, a looped 4.2 mile mix of trail and tarmac through the Black Mountains where runners complete hourly loops until one remains. Reach 32 miles to earn an ultra medal or play for the winner..

The Brecon to Cardiff Classic is a 70-kilometer ultra running race following the scenic Taff Trail from Brecon in the Brecon Beacons National Park to Cardiff. Now in its 12th year, this fully marked, one-way race features diverse landscapes..

Brecon to Cardiff Xtreme is a winter mountain ultramarathon, a 75-km linear challenge from Brecon to Cardiff (about 47 miles) with roughly 2,700–2,800 m of ascent, including 11 summits such as Pen y Fan, Cribyn and Fan y Big. The Taff Xtrem..

The St David's Day Dragon Run 2026, organized by Saturn Running, takes place in the scenic Dare Valley Country Park in Aberdare, Wales. This 7-hour time challenge allows participants to run distances of their choice, starting from a minimum..

Explore riverside paths and rocky trails at Loggerheads Country Park with 5 km, 5 km canicross and 10 km options on 7 March 2026. Varied terrain, steps and scenic views make this a fun and rewarding challenge for runners and their dogs.

Tackle the Hateful 8 Ultra Loop on 7 March 2026 at Bridgend. Run as many 9 mile loops as you can in 8 hours over mixed terrain with steep climbs and technical forest descents, plus support, snacks and a bespoke finish medal.

Enjoy a two day festival at the Brynkinalt Estate with canicross on day one and scenic trail 5k and 10k races on day two. Expect rolling estate trails, great views and a friendly festival vibe.

Run the Nant Yr Arian Silver Trail on 14 March 2026 across scenic Cambrian Mountains, with a half marathon, 10 km and junior races for all ages. Enjoy an event village, charity support and great mountain views.

Run the rugged Black Mountains at Beast of the Blacks on 14 March 2026, with 11, 20 or 40 mile routes offering stunning views and testing terrain. Fully waymarked courses and supportive checkpoints make for a memorable mountain running day.

The Saturn Running - Aberdare will take place in Aberdare on Saturday 21 March 2026. You can run between 7 and 50 kilometers.

Join the 6th Red Warrior at Margam Country Park on 22 March 2026 for challenging multi terrain races. Choose 5K, 10K or 20K with separate categories for canicross and solo runners and grab a 10% early bird discount with code RWEB.

Take on the Paddy Buckley Recce Fun Run across the Glyderau from Capel Curig on 28 March 2026. This guided 15 km mountain run with 1,830 m ascent is led by experienced mountain leaders and offers a taste of the legendary Paddy Buckley Round..