Trail Running calendar near Llanberis 2026-2027

We have found 187 Trailruns within 80 miles of Llanberis. See below where and when you can find the races.

Ribble Runfest is a looped 10K to ultra event around Avenham Park and Upper Farm nature reserve in Preston, held on hard paths with on-course refreshments and bespoke medals for finishers.

Join this monthly trail series at Wirral Country Park featuring an 8 km course. Open to runners aged 16 and over, the event offers individual race entries and series trophies across multiple age categories.

Third and final event in the 2026 Summer Series at Chorlton Water Park, featuring lap-based timed running on a 5.3 km riverside course with a seven hour limit and a finishers medal for every participant.

A 10 mile trail race through Radnor forest in Mid Wales on 23 August 2026, held in aid of the Special Care Baby Unit in Hereford. The route reaches Black Mixen at 2130 ft and includes forestry roads, moorland and tree covered single track.

A non stop 130 mile canal towpath race from Liverpool to Leeds run under UK Athletics rules. Open to runners aged 20 and over, the event has a 40 hour limit and a limited number of unsupported entries with regular feed points.

September 2026

Experience an endurance challenge along the coast with solo and relay options ranging from 50 to 130 miles. This multi day event features strictly timed checkpoints and self navigation in a stunning natural environment.

A multi-terrain off-road race of about 4 miles in Shotton on 4 September 2026, with pre-entry fees (£10, £8 affiliated), prize categories by age, a minimum age of 17, and a 200-person entry limit.

Experience a 102 mile self navigation mountain race through Snowdonia Eryri National Park. This event features 5172 m of elevation and 11 supported checkpoints for qualified ultramarathon runners.

A 45 mile mountain ultramarathon in Snowdonia Eryri on 5 September 2026 with 2800 m ascent and a 20 hour cut off. Entry requires previous ultra and mountain experience and mandatory navigation kit.

Trail running in the Shropshire Hills with Marathon, Half Marathon and 10K options on a single lap route through National Trust land, starting and finishing at Carding Mill Valley near Church Stretton.

Experience an all-terrain run from Barmouth beach to the summit of Cadair Idris. Choose from three distances featuring coastal views and mountain trails with full marshal support and chip-timed results.

A long-distance walking and running event crossing Wales over a 45 mile linear route to be completed within 18 hours, presented as a weekend package with accommodation, coach transport, refreshment stops and route maps.

The Cheshire 100 Ultra Run follows the Cheshire Canal Ring from Northwich and is organised by New Era Community Boxing. Entry is open to those over 20, with route guidance, checkpoints, support options and a 36 hour time limit.

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.

Experience a point to point half marathon along the scenic Sandstone Trail from Bickerton Hill to Kelsall Hill. This event features professional timing, on course water stations, and excellent finish line facilities including showers and a..

A six day, multi stage 380 km ultra across the spine of Wales with unmarked navigation and about 17,400 m of ascent. Two day Dragon's Fire and Dragon's Tail options cover the northern and southern sections respectively.

A guided mountain run across the 15 Welsh 3,000 ft peaks in Snowdonia covering about 30 miles and 4,000 m of ascent. Transport, a mountain guide, support vehicle and food stations are included in the booking price.

A one lap 10K trail run through Yarrow Valley on 13 September 2026, routed along woodland paths and riverside trails with crossings of the River Yarrow. Based at the Flaming Grill Pub, entry is listed at £16 and every finisher receives a me..

Coastal trail races in Abersoch on the Llyn Peninsula offering 20K, 10K and short beach runs along coastal paths and sand, with chip timing, drink stations, medals and a beach finish area with music and food.

Enjoy a flexible timed event along the scenic River Mersey at Chorlton Water Park. Choose your own distance from 5km up to an ultra marathon on this flat and fast riverside trail course.

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