Trail Running calendar near Haverfordwest 2025-2026

We have found 64 Trailruns within 80 miles of Haverfordwest. See below where and when you can find the races.

Join the Smurf Run Wales at Dare Valley Country Park, a scenic 7 hour challenge where you choose your laps. From 3 km to marathon and ultra distances, enjoy on course refreshments, vegan options and a goody bag.

Take on the Combe Crawler, a 13.6 km multi terrain cross country around Ilfracombe's coastal paths, woodland tracks and hills. The tenth running on 23 November 2025 is fully marshaled and raises funds for South West Blood Bikes and North De..

Explore Afan Forest on hand picked trails with 5K and 10K options at the RTT Afan Forest run. Fully marked and marshalled courses, chip timing and a finisher medal make this a rewarding, well organised trail day for all abilities.

December 2025

Embrace festive trails in the Brecon Beacons with the Secret Santa Festive Trail, a scenic but challenging run across the Black Mountains. Multiple distances, checkpoints with vegan options and a canicross welcome for dogs on leads.

Navigate the sand dune maze of Braunton Burrows South at a scenic orienteering event on Sunday 7 December, part of the South West Orienteering League. Multiple courses for all abilities promise coastal views across the Taw estuary and Saunt..

Choose from three challenging trail distances through Afan Forest, the Rhigos mountains and Coed Morgannwg Way, featuring climbs, long descents and river crossings. Finish at scenic Dare Valley Country Park on 13 December 2025.

UTMB Index

The Night Nobbler is a 10km night trail near Narberth returning to its original woods under the RERUN theme. Dress in upcycled fancy dress for solo or group prizes and bring a head torch and phone for this atmospheric after dark run.

Run the spooky A Nightmare Before Xmas Trail half marathon in Bridgend on 20 December 2025, a festive mixed terrain course with hills, mud and scenic road views. Limited to 50 runners, with an eight mile option, mulled wine and a prize for..

Get into the festive spirit at Santa Run Wales in Dare Valley Country Park, Aberdare, a family friendly fun run with optional fancy dress, Christmas music and mince pies. Every finisher earns a festive medal and goody bag.

January 2026

Discover upland trails in the Elan and Claerwen Valleys at this volunteer run walking and running event, with waymarked routes of about 12 or 20 miles. Map reading is needed; entrants receive a map and GPX in advance and funds support local..

Take on Spice Up Your Run Wales, a relaxed 7 hour time challenge at scenic Dare Valley Country Park where you pick your distance from 3 km upwards. Enjoy countryside laps, snacks and medals for finishers, with fancy dress warmly encouraged.

Take on the Ras Tarrenhendre Fell Race in Abergynolwyn, Wales on 31 January 2026, a rugged 6 mile course climbing to Tarrenhendre summit with 2000 ft of ascent. Enjoy tough trails, dramatic views and homemade soup back at HQ.

March 2026

Run 70k along the Taff Trail from the Brecon Beacons to Nantgarw, enjoying reservoirs, viaducts and valley views on a fully marked one way ultra. Bus transfers and strong on course support help you focus on the run.

Take on the Brecon to Cardiff Xtreme, a rugged 75 km mountain ultra across 11 summits, or join the Taff Xtreme Marathon for the scenic second half of the route. Both routes finish at Coleg y Cymoedd and demand strong navigation and grit.

Join the St David's Day Dragon Run at Dare Valley on 1 March 2026, a relaxed seven hour challenge where you choose how many laps to run. Expect scenic trails, medals from 3 km and tasty goody bags with vegan options.

Enjoy scenic trails at Nant Yr Arian on 14 March 2026 with half marathon, 10 km and junior races. Waymarked routes, marshals and a village with food and coffee make this charity trail a great day out.

Take on the Beast of the Blacks, a scenic trail running challenge through the Black Mountains of Wales with 11 mile, 20 mile or epic 40 mile options. Fully marked and well supported with checkpoints, camping, medics, canicross friendly faci..

Join the Dashing Dog Charity Run at Dare Valley Country Park for a 7 hour time challenge where you choose how many laps to run. Support local dog rehoming charities and enjoy scenic trails, medals and on course aid.

Join the Red Warrior Challenge at Margam Country Park on 22 March 2026 for mixed terrain races offering 5K, 10K and 20K options. Solo runners and canicross teams welcome at this sixth annual celebration of trail fun and challenge.

April 2026

Event overview The Dyfi Half takes place in Aberdyfi on Sat 04 Apr 2026. The event offers a half marathon and a marathon (run as two laps of the half). The half is an Index Race in the UTMB 20K category. The first 20 places are offered at a..

UTMB Index