Trail Running calendar near Llanfairpwllgwyngyll 2025-2026

Nant Yr Arian Silver Trail Races on 14 March 2026 in the Cambrian Mountains with half marathon, 10 km and junior races. Organised by Aberystwyth Athletic Club as a not for profit race supporting charities, routes are waymarked with GPX.

Two day canicross and trail festival on the private Brynkinalt Estate with scenic climbs and farmland views on approx 5k and 10k routes. Awards for top finishers and a charity partner give it a festival feel.

Take on the Beast of the Blacks in the dramatic Black Mountains of Wales on 14 March 2026, choosing 11, 20 or 40 mile trail routes through rugged, scenic terrain. Well supported with checkpoints, vegan refuel, camping and canicross welcome..

Join the Trotters 5 Mile Community Trail Run at Smithills Sports Centre in Bolton on 15 March 2026 for a friendly, chip timed five mile off road challenge. Entry limited to 300 runners so grab your spot and enjoy a community atmosphere.

The Mount Karrin will take place in Sulby on Sunday 15 March 2026. You can run 9 miles.

Join Smithy's Charity Trail Run on 21 March 2026 for a lively 5 mile trail through Rainy's Deakins Park in Egerton. Enjoy scenic trails, friendly competition and great causes in a community event by Mad Bull Events.

Join a friendly, inclusive trail challenge at Moel Famau on 28 March 2026. The Piece of String race at Bwlch Penbarras is a surprise 6 to 12 km hill run with canicross first and a medal and chocolate for finishers.

Guided recce of the Glyders from Capel Curig, 15 km with 1,830 m of ascent, led in small groups by Mountain Leader qualified guides. Ideal for fell runners wanting a taste of the Paddy Buckley Round on 28 March 2026.

Ras yr Aran on 28 March 2026 starts from Llanuwchllyn village hall near Bala and offers a testing 10 mile senior race with about 945 m of ascent across classic North Wales terrain. Teams and juniors welcome with limited entries.

The Phoenix Running - Stretford will take place in Stretford on Saturday 28 March 2026. You can run 3 miles.

Join a guided recce of the Ogwen Valley to Capel Curig leg of the Paddy Buckley Round in Snowdonia on 29 March 2026. Tackle 16 km with 1,245 m of gain in small groups led by experienced mountain leaders.

The Aberdyfi Half Marathon will take place in Aberdyfi on Saturday 4 April 2026.

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

Run the Summit 2 Sea off road half marathon along the Offa's Dyke Trail from Moel y Parc to Prestatyn beach. About 13.8 miles of rewarding climbs and a big descent to sea level with stunning views and a real sense of adventure.

Take on the Llangollen Fell Race on 12 April 2026 with three scenic but testing routes from 5 miles to 28 km across the North Wales hills. Race HQ serves tea, coffee and cakes and entry is open in advance or on the day.

Ogwen | Yr Helgi Du 2026 is a skyrunning style mountain trail race on April 12 at Plas y Brenin, Capel Curig, weaving technical ridges across the Carneddau and Glyderau. Expect tough terrain, stunning views and a lively event village.

Run the Rivington 10 miles Trail Challenge on 12 April 2026, a scenic chip timed route around Rivington Village, White Coppice and Wheelton plantation. Popular and often sold out, finishers earn bespoke medals and top prize categories.

Take on the inaugural MTC Gelert 47 mile ultra from Barmouth to Llanidloes on 16 April 2026, the third day of the MTC CYMRUN end to end. Limited field, bespoke medal for all finishers and real time tracking for supporters.

Take on Chester Ultra 100, a scenic 102 mile trail around Chester that links forests, ridges and castles with a generous 32 hour cut off. Live GPS tracking keeps friends and crew updated as you tackle this epic day and night challenge.

Run or walk the Shropshire Way 80K Festival on 18 April 2026 from the Shropshire Hills Discovery Centre, enjoying hilly trails through peaks, Iron Age hillforts and woodlands. Distances 10 km to 80 km and proceeds support Grow Cook Learn.