Trail Running calendar near Haverfordwest 2025-2026

We have found 65 Trailruns within 80 miles of Haverfordwest. See below where and when you can find the races.

Run the Brecon Beacons at the Beacons Ultra, Marathon and Half on 7 November 2026. Scenic but demanding routes climb to Pen y Fan and thread trails, canals and reservoir shores for epic autumn views.

Run through the woodlands of Margam Country Park on fully marked trails with GPS routes available for a half marathon, 10k or 5k. Enjoy scenic climbs, included parking and a finishers medal in a friendly Trail Revolution event.

December 2026

Celtic Trail Races bring three winter trail distances in South Wales, from flowing single track to steep climbs, with views over the Brecon Beacons. Courses are waymarked and finish at Dare Valley Country Park with checkpoint support.

Enjoy a festive trail half marathon at Bridgend with muddy hills, technical forest descents and scenic road views. Dress up for the fancy dress prize and celebrate with mince pies, hot drinks and a bespoke medal at the finish.

Celebrate the season with the Snow Globe Gallop Bobble Hat Run at Dare Valley Country Park, a 7 hour Time Challenge where you choose your distance from 3 km to ultra. Finishers get a bobble hat and themed medal with distance pins and park a..