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 iconic Twin Peaks of Pen Dinas and Constitution Hill from Aberystwyth bandstand, a scenic mixed terrain race that blends road sections with off road path climbs. Junior and senior routes make it a family friendly challenge.

The Scare Bear Run in Aberdare, hosted by Saturn Running, is a unique 7-hour time challenge event set in the scenic Dare Valley Country Park. Participants can choose their distance, starting from a minimum of 3km, with laps of approximately..

November 2025

Tackle a scenic 30 mile trail ultra through the Brecon Beacons from Merthyr Tydfil, summiting Pen y Fan and descending Jacob's Ladder on a challenging but rewarding route. Chip timed with marked course and aid stations.

Run the rugged foothills of the Brecon Beacons on 8 November 2025 with the Beacons Ultra, Marathon and Half in Talybont on Usk. Choose from 49 mile ultra, 26 mile marathon or 13 mile half on scenic trail, mountain and canal terrain.

UTMB Index

Dusk To Dawn - Bridgend Miniature Railway Dusk To Dawn is a 12-hour ultra challenge held on 8 November 2025 at Bridgend Miniature Railway, Fountain Road, Aberkenfig, Tondu, Bridgend, CF32 9BZ, Mid Glamorgan, GB. Entry is open to people aged..

Run the stunning Gower coastline at Oxwich Bay on 8 Nov 2025 with routes across cliff tops, dunes, woodland and beaches. Options from 10K to Ultra suit every level while full marking and electronic timing keep the focus on the views and the..

UTMB Index

The Margam Trail Races take place at Margam Country Park and Forest, offering runners a scenic and well-marked trail running experience. The event features three distances: a half marathon (21.1 km with 750m elevation), a 10k (10.2 km with..

Take on the Trails & Tarmac 12 hour Backyard Ultra in the Black Mountains near Crickhowell, repeating a 4.2 mile mixed trail and tarmac loop each hour. Earn medals for every lap and fight it out on the final timed loop to win.

The Cardiff Trail Half Marathon is an exciting running event set against the stunning backdrop of Castell Coch. Scheduled for November 16, 2025, this newly introduced race offers a unique blend of competition and scenic beauty, making it an..

The MT10 (Multi-Terrain 10) is a 10-mile (16 km) off-road trail run held at Pembrey Country Park and along Cefn Sidan Beach in Carmarthenshire. The course features a mix of soil and firm sand surfaces, providing a varied terrain that accomm..

Event overview The Smurf Run is organised by Saturn Too Limited, a franchise partner of Saturn Running, and is scheduled for 22/11/2025 at Dare Valley Country Park, Aberdare, CF44 7PS. The event is run as a 7 hour Time Challenge that allows..

Tackle the scenic Combe Crawler, an 8.5 mile cross country trail around Ilfracombe featuring steep coastal paths, woodland tracks and rolling fields on the classic route run in reverse. Enjoy marshalled support, a souvenir finish and a race..

Event details RTT Afan Forest 10k & 5K is organised by Aspire X Events and takes place at Bryn Bettws Lodge, Pontrhydyfen, Port Talbot SA12 9SP. The next scheduled race date is 30/11/2025. The event runs on trails in Afan Forest and off..

December 2025

Event details The Secret Santa Series is a trail event in the Brecon Beacons National Park based at Cwmdu Hall, Powys. Distances offered include: 14 km (Figgy Pud) 10 mile (Turkey Ten Mile) Half marathon (Du Mulled Wine) All routes start..

Run the Celtic Trail Races around Dare Valley Country Park, with forest trails, sharp climbs, river crossings and sweeping Brecon Beacons views. Choose from 34, 26 or 13 mile routes and finish back at Dare Valley.

UTMB Index

A Nightmare Before Xmas Trail half marathon mixes festive fun with a testing trail route including the infamous Hill of Doom. With only 50 places, expect fancy dress prizes, a bespoke medal and seasonal treats like mulled wine.

The Christmas Carol Bobble Hat Run, organized by Saturn Running, takes place in the scenic Dare Valley Country Park in Aberdare, Wales. This inclusive event welcomes runners and walkers of all abilities. Participants can choose their distan..

January 2026

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..

February 2026

Join the Trails & Tarmac Backyard Ultra near Crickhowell in the Black Mountains for an addictive looped endurance challenge. Tackle hourly 4.167 mile loops until one runner remains while anyone who reaches 32 miles earns a medal.

March 2026

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..