Trail Running calendar near Llanberis 2025-2026

We have found 99 Trailruns within 80 miles of Llanberis. See below where and when you can find the races.

Take on scenic trails at Tatton Park on 31 May 2026 as part of the Wild Hybrid Weekend, with 10 km and half marathon routes across grass, woodlands and paths. Canicross welcome and all finishers get a medal, Wild Deer merch and refreshments..

June 2026

Run through Ironbridge scenery on a varied 8 mile loop taking in the Silkin Way, Rough Park and the Valley of Ironbridge. Choose 8, 16 or marathon by repeating laps, wear fancy dress and support a local defibrillator fundraiser.

Take on the epic guided Welsh 3000s Ultra Run in Snowdonia, crossing 15 peaks over roughly 30 miles with 4,000 m of ascent. This non competitive, fully supported mountain challenge includes guides, transport and food stations.

Join a guided recce of the Paddy Buckley Snowdon leg in scenic Snowdonia, a challenging mountain run led in small groups by experienced mountain leaders. Expect technical terrain, big climbs and stunning views with expert route advice.

Tackle 51 miles of rugged trail through Southern Snowdonia, summiting peaks near Cadair Idris and Rhinog Fach with nearly 2900 m of ascent. Limited to 500 runners, an epic mountain challenge with checkpoint support and live GPS.

Run the scenic Lake Vyrnwy 10k on 21 June 2026, a mixed terrain trail around the picturesque Llanwddyn estate with climbs and fast stretches. Enjoy a lively finish and a commemorative medal for all finishers.

Run the scenic Lake Vyrnwy 10k on 21 June 2026, a mixed terrain trail around the picturesque Llanwddyn estate with climbs and fast stretches. Enjoy a lively finish and a commemorative medal for all finishers.

Aggies Staircase is a punchy 4 mile fell race around Darwen Tower with 350 m of ascent, featuring the infamous, steep Aggies Staircase climb. Expect sharp climbs, runnable moorland and a scenic but testing route hosted by Darwen Dashers.

July 2026

July the Turd invites runners to tackle scenic laps around Ironbridge valley in Shropshire, with 8 mile, 16 mile and marathon options. Start and finish at The Unicorn Inn for a friendly pub atmosphere and a well earned finisher item.

Take on the MTC Hafren Ultra, a scenic 27 mile point to point run over Plynlimon to the source of the River Severn and finishing in Caersws. Expect big climbs, technical river paths and sweeping upland views.

Tackle the Severn Challenge: a five day, roughly 220 mile multiday ultra along the Severn Way from source to sea, testing navigation and endurance. Enjoy nightly hotel stops, baggage transfers and collectible stage medals that form a jigsaw..

Take on the scenic 48 mile MTC Severn Plod Ultra from Mid Wales to Shrewsbury on 9 July 2026, celebrating its 10th edition with challenging trails and sweeping views. All finishers earn a bespoke medal and starters get a free MTC visor.

Take on the MTC Severn Path Ultra on 10 July 2026, a point to point 59 to 60 miles along the River Severn from Shrewsbury to Worcester. Expect varied terrain, limited signage, mandatory kit and a bespoke finisher medal and visor.

Run through the wild beauty of Eryri at the Snowdonia Trail Marathon in Llanberis, with distances from 10K to a 57 km ultra offering panoramic climbs and rugged trails. Enjoy a lively event village, chip timing, and support on course.

UTMB Index

Take on Yr Wyddfa in Snowdon24, a 24 hour ultra trail challenge from Llanberis where runners aim to climb and descend Snowdon as many times as possible. Solo and team entries welcome, with full support, tracking and stunning mountain scener..

Enjoy scenic trails through the Shropshire Hills at The Piece of Cake Trail Run in Carding Mill Valley, with 10K, half and full marathon options. Post run treats and a cake competition add a sweet finish to this countryside challenge.

Tackle the Welsh 3000 Challenge, a guided Snowdonia adventure across the 14 peaks over 3000 feet, from Snowdon to the Carneddau. Pick a one day push or a two day option with expert guides, support stops and unforgettable ridge running.

Guided three day loop from Capel Curig through northern Snowdonia, about 100 km with 47 summits and roughly 9000 m of ascent across the Welsh 3000s. Places limited to six for an intimate expert led experience.

August 2026

Run along a scenic disused railway beside the River Severn from Ironbridge to Bridgnorth, passing industrial heritage sites. Multiple distances offer a riverside challenge with aid stations and welcoming pubs nearby.

SkyRun Eryri in Rhyd Ddu, Snowdonia on 15 August 2026 offers four mountain races from a 16 km trail to a 55 km ultra across rugged, technical terrain and stunning peaks. Staffed aid points and bold climbs await adventurous trail runners.