Trail Running calendar near Llanfairpwllgwyngyll 2025-2026

We have found 135 Trailruns within 80 miles of Llanfairpwllgwyngyll. See below where and when you can find the races.

SkyRun Eryri brings classic Snowdonia skyrunning to Rhyd Ddu with four mountain trail races from a technical 55 km ultra to shorter scenic challenges. Expect rocky scrambles, grassy ridges and towering Welsh 3000s views.

Tackle 130 miles along the Leeds and Liverpool Canal from Liverpool to Leeds in a single continuous towpath race. Limited to 100 entrants with supported and unsupported options, this is a bold ultra challenge for experienced runners.

Join the Dark Side Of The Combe on Mon 31 Aug 2026 in the Lake District as part of the Black Combe Country Fair at Bootle. This 12.5 km fell race with 625 m ascent is a tough, scenic test and has on the day entry.

September 2026

Run Anglesey's rugged coast with Ring O' Fire 130, a 130 mile three day circumnavigation of the island with cliffs, beaches and about 4,000 m of ascent. Or try the Firelighter 50, a near 47 mile coastal challenge finishing in Moelfre.

Take on the Yr Wyddfa Snowdon Ultra 100, a 102 mile mountain ultramarathon across rugged Snowdonia with roughly 5,172 m of ascent and demanding self navigation. Limited to 250 runners, it features checkpoints, live GPS tracking and a 42 hou..

Take on the Yr Wyddfa Snowdon Ultra 50, a rugged 45 mile mountain ultra through iconic Snowdonia peaks including Yr Wyddfa and Tryfan. Expect big climbs, GPS tracking, strict kit rules and a limited field for a true high mountain challenge.

Run the rugged beauty of the Shropshire Hills at Battle of the Borders, starting from Carding Mill Valley and tackling the dramatic Long Mynd ridges. Choose marathon, half marathon or 10K on waymarked, scenic but rewarding trails.

Take on the Stretton Skyline, a scenic yet demanding 30.5 km fell race around Church Stretton with 1357 m of climb and panoramic Shropshire Hills views. Pre entry only, finishers enjoy a tasty goody bag.

The Montane Dragon's Back Race will take place in Conwy from Monday 7 September 2026 to Friday 11 September 2026.

UTMB Index

A guided mountain run in Snowdonia on 12 September 2026 visiting all 15 Welsh 3,000 ft peaks across about 30 miles and 4,000 m of ascent. This non competitive challenge includes experienced guides, transport and food stations.

The Spirit of Axnfell will take place in Isle of Man on Sunday 13 September 2026. You can run 32 kilometers.

Run the scenic 13.1 mile 361° Abersoch Half Marathon on the Llyn Peninsula, finishing with a final kilometre across Abersoch Beach. Enjoy music, massages, beach bar and prizes plus medals and tech tees for all finishers.

EcoTrail Wicklow returns on 26 September 2026 for a nature rich trail running day through the Wicklow Mountains. Distances from 10K to 80K offer rugged singletrack, big views and a true outdoor challenge for all levels.

UTMB Index

The North Barrule will take place in Ramsey on Saturday 26 September 2026. You can run 5 kilometers.

Run Delamere Forest Wildwood on Sunday 27 September 2026: choose a half marathon or 10K on technical, scenic forest trails with climbs and mud. Canicross option lets you enjoy the race with your dog.

October 2026

Take on the Town to Tower 10k on 3 October 2026, an all uphill 10k from Ruthin to the Jubilee Tower atop Moel Famau. Expect varied trails, steep climbs and stunning summit views in this scenic autumn challenge.

Run a scenic 32 mile loop in the Cambrian Mountains from Camp Plas on 10 October 2026 with a fully marked, well supported course. Enjoy exclusive weekend camping, BBQ, live music and lakeside activities, entries limited to 100.

Take on the scenic Twin Peaks & Ras Consti in Aberystwyth, with a testing 11.7 kilometre senior route over Pen Dinas and Constitution Hill. Starts and finishes on the promenade with great views, cafes and family friendly junior races.

Enjoy scenic autumn trails at Loggerheads Country Park with 6 km and 12 km options suitable for all abilities, including canicross. Family friendly with no time limits and early starts for quieter running.

Take on the Brenig Way 50 km trail through the Dee Valley and Clocaenog Forest, finishing on the Llyn Brenig dam. Expect technical climbs, riverside paths and full electronic timing with GPS trackers to keep you on course.