Trail Running calendar near Llanfairpwllgwyngyll 2026-2027

We have found 174 Trailruns within 80 miles of Llanfairpwllgwyngyll. See below where and when you can find the races.

A surprise-distance trail run at Bwlch Penbarras with an earlier Canicross start; organisers reveal the last kilometre. The marked, marshalled course is 6 to 12 kilometres across hilly terrain and includes a chocolate treat and a finishers'..

Explore the Llanberis to Ogwen Valley leg of the Paddy Buckley Round with this guided 15 km mountain run featuring 1,830m of elevation gain across the Glyders in North Wales.

Join a flat and fast trail run along the Manchester riverside towpath. Complete anything from a single lap to a seven hour endurance challenge to earn a themed finisher's medal while supporting a local charity.

Experience an extreme 50.5 km mountain race through the scenic trails of County Wicklow. This self sufficient ultra trail features 1900 m of elevation gain and serves as a European Championship trial race.

Explore the Carneddau leg of the iconic Paddy Buckley Round on this 16 km guided mountain run. Gain 1,245 m of elevation while learning the route from qualified Mountain Leaders in the heart of Snowdonia.

April 2026

Experience an evening trail run through Horwich with this 5km race organized by Winter Hill Runners. The event starts and ends at the Jolley Crofters Public House for a convenient local racing experience.

Experience a trail run through the UNESCO Dyfi Biosphere and along the Wales Coast Path. This event features a half marathon and a two lap marathon with 850m of elevation gain in the stunning Snowdonia National Park.

UTMB Index

A fell race in Horwich on 4 April 2026 organised by Horwich RMI Harriers with registration at the Crown Public House and start and finish at Lever Park Avenue; junior entrants under 16 must enter the junior race.

The Manx Mountain Marathon will take place in Ramsey on Saturday 4 April 2026. You can run 50 kilometers.

Tackle this fully guided 68km linear trail from Pentrefoelas to Bodfari, gaining 1,840m of ascent. With checkpoint support and qualified guides, the focus is on steady progress through remote landscapes. Finishers receive a wooden medal and..

SheUltra is a 50 km ultrarun on 11 April 2026 in Pwllheli, United Kingdom. The event enforces a no crew no pacers policy, requires mandatory kit, and recommends third party insurance.

Experience the Summit 2 Sea Half Marathon along the Offa's Dyke path. This friendly and inclusive event offers a personable race experience for runners of all abilities looking to get moving outdoors.

Three off-road routes around Llangollen on 12 April 2026, including a new short course and climbs over Dinas Bran Castle. Proceeds support local mountain rescue and Llangollen Foodbank.

Experience the Ogwen valley through this skyrunning event in Eryri. Choose between 10km, 25km, and 40km routes featuring technical mountain terrain and alpine peaks starting from the National Outdoor Centre.

UTMB Index

A popular 10-mile trail run through the scenic Lancashire countryside near Rivington Village. This chip-timed spring event offers a varied route of woodlands and open moors, a finisher's medal, and prizes. It regularly sells out due to its..

The MTC Gelert is a 47-mile ultramarathon along Wales's scenic National Cycle Route 8, from Barmouth to Llanidloes. It is also the third day of the CYMRUN multi-day challenge. The event has a strict 4 mph pace requirement and provides a bes..

Experience a 102 mile ultramarathon through Cheshire and the Sandstone Trail. This 32 hour challenge features 12 supported checkpoints and rewarding trail terrain for experienced long distance runners.

Experience the landscape of the Shropshire Hills through a series of trail runs and walks ranging from 10 km to 80 km. Enjoy local food and historical landmarks while supporting educational charity programs.

On 18 April 2026 Nightingale House Hospice stages 5 km and 10 km multi terrain runs at Alyn Waters Country Park with chip timing, marshals, water stations and finishers medals. A 1 km children's dash accepts on day entries.

An 8.6 mile multi terrain loop around Trawsfynydd lake in Snowdonia, run under Welsh Athletics rules. Proceeds support the volunteer South Snowdonia Search and Rescue team; chip timing, marshals and water stations provided.