Trail Running calendar near Dyffryn Nantlle 2026-2027

UKA British Fell & Hill Relays in Dinas Mawddwy, Powys, uses a four legs relay format and is hosted by Meirionnydd Running Club. The SiEntries listing shows the event setup is in progress and further details are pending.

An untimed outdoor mud run at Lyons Lane Motocross LTD featuring brook crossings, hill climbs, a mud crawl and a water slide finale. Entrants can choose 5k or 10k and children from 8 must follow supervision rules.

Cadair X is a 13.1 mile mountain half marathon with 1165 m of ascent that climbs to the 893 m summit of Cadair Idris. The marked route crosses woodland, glacial lakes and technical summit terrain and a GPX file is available.

A 50 km marked trail on the Brenig Way from Corwen to Llyn Brenig, with 1450 m ascent, three checkpoints and mandatory kit requirements; navigation uses waymarkers, a GPX file and an event map.

An 8 hour looped event at Delamere Forest where runners complete as many 6.02 km woodland loops as they can; a single aid station provides refills and snacks and results record laps, distance and elapsed time.

Discover Warrington's historic transport networks on this circular half marathon. Enjoy a marshalled trail route along canals and rivers with chip timing and a finishers medal included.

Experience a fast and flat out and back race along a historic railway path. Enjoy scenic views of the Dee Estuary and Wales while completing this chip timed event on the Wirral Way gravel trails.

A memorial road and off road event organised by Green Events featuring a half marathon and a 12k in mountainous scenery. The race is cupless, open to those over 16, and lists online and on the day entry options.

A guided 13 km loop around Llyn Trawsfynydd in Southern Snowdonia on runnable trails, led at a steady pace with regular regrouping stops; organised by OutFit with standard and member entry options.

A nighttime trail race at Delamere Forest with a Spooky Halloween fancy dress theme. Options include a 10k single lap or a Half Marathon two lap course with a glow in the dark finisher medal and event photos included.

An evening Halloween 5k at Herons Reach, Blackpool on 31 October 2026 featuring a multi-terrain park route with themed sections, compulsory head torch, glow-in-the-dark finisher medals and age-category awards. Pre-booking is required and fe..

A trail Half Marathon and 10K on Anglesey on 1 November 2026, with routes through Newborough Forest and along Llanddwyn Beach offering views across the Menai Strait to Eryri. The event includes marked courses, marshals, an event village and..

A trail running event at Sankey Visitors Centre in St Helens on 1 November 2026, organised by St Helens Striders. Places are limited to 250, entries open 1 December 2025 and require a SiEntries account; minimum age 15.

An eight-day running series in Telford from 1 to 8 November 2026 where each day is a separate race. Runners may enter any combination of days and choose from 8 miles, 16 miles, a metric marathon or a full 26.2 mile marathon.

A community canicross event at Mere Sands Wood on 1 November 2026, featuring a timed one mile run or walk and an optional 2.5 km social run. The route uses mostly flat woodland trails and onsite facilities include a visitor centre and cafe.

Night fell race at Llandegla Forest covering 6.4 km with 229 m of climb. Entry is £5 on the day and runners must carry compulsory kit including a headtorch with at least two hours of light.

A 6 mile out and back fell race with 1900 feet of ascent around Rhobell Fawr, starting and finishing at Llanfachreth village hall. It opens the Meirionnydd Winter Race Series and requires full WFRA kit and fell shoes.

An annual November trail race organised by Billinge Running Club on a mapped, marshalled **5-mile** route over varied, sometimes muddy terrain. Registration and bag drop are at The Delph Tavern with parking at Up Holland High School.

Experience the Pen Llyn Ultra Winter Edition in November 2026. This Coast 2 Coast event offers a 37.5 mile solo ultra-marathon or a team entry for groups of four through a scenic winter landscape.

A fell race from Cilcain Village Hall over 15.7 km with around 950 m of ascent, requiring navigational skills and prior experience; facilities include toilets and refreshments, and team entries have no charge.