Trail Running calendar near Morfa Nefyn 2026-2027

A fully waymarked sea to summit ultramarathon from Caernarfon Castle to Rhyd Ddu, covering 29 miles with about 5600 ft of ascent. Professional mountain safety and medical teams support runners and finisher medals form part of the Sea to Sum..

A fell race near Criggion covering 11.5 km with 790 m of ascent on a partially marked course that requires navigational skills. Entry is £8 and teams may enter free of charge.

A community focused 5 mile mixed terrain race in Rimrose Valley Country Park, Waterloo, Liverpool, with a scenic traffic free course through woodland and canal paths and a themed medal for finishers.

A guided trail run of about 10 km around Llangollen visiting Castell Dinas Bran and the Abbey and returning via the canal. The group keeps a steady pace with regular regrouping stops; members may enter for free while standard entry is £19.5..

Women only night trail in County Wicklow on 2 October 2026. The fully marked 7.00 km route follows the Sugarloaf Way, requires a head torch and trail runners, and entry fees will be donated to Bray Women's Refuge.

Test your navigation skills in County Wicklow at the second race of the annual Nav Challenge league. Navigate an unmarked course through the Irish mountains using traditional methods without GPS assistance.

An uphill only 10 km from Ruthin to the Jubilee Tower on Moel Famau, featuring mixed terrain and a summit finish above 550 m; transport back to town can be purchased on site.

A night mountain running event in County Wicklow with fully marked long and short courses, mandatory Level B kit including a headtorch, technical terrain and variable weather. Parking and prizegiving take place at Lough Tay / Lough Dan carp..

A 32 mile trail through the Cambrian Mountains from Camp Plas near Dolanog, capped at 100 runners and fully marked with checkpoints and a 14 hour cut off. The weekend includes on-site camping, catering, live music and lakeside activities.

A coastal 10 km trail run in Howth, Dublin on 10 October 2026 with an age limit of 16 and an entry fee of €42 plus fees.

The Twin Peaks Race in Aberystwyth challenges runners with ascents of both Pen Dinas and Constitution Hill on an 11.7 km route. A shorter junior race on the promenade is also available. The event features varied terrain and finishes with a..

Nav Challenge 3 is the fourth race of the Navigational Challenge league in County Wicklow on 11 October 2026. The route is unmarked, GPS is not allowed, and participants must carry mandatory Level B kit.

Trail races at Loggerheads Copuntry Park with a 6km loop, a 12km two-lap option and a 6km Canicross. Courses are marked and marshalled and entry fees range from £19 to £22.

An untimed 5k and 10k adventure run at Lyons Lane Motocross LTD in Shrewsbury on October 17, 2026. The course uses a MotoX track and includes brook crossings, hill climbs, a mud crawl and a water slide finish.

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.

Blindfolded navigation challenge in Chester where participants are dropped at unknown locations and must find their way back over 6, 10 or 15 mile options.

A *50 km* trail on the marked Brenig Way from Corwen to Llyn Brenig dam, with 1450 m ascent, varied upland and forest terrain, three checkpoints, required kit and GPS trackers provided.

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 marked night trail in Glendalough with a 10 km loop and an about 4.8 to 5.0 km short option, including 490 m ascent and sections of the Wicklow Way and St Kevin's Way. Level B mandatory kit and a suitable torch are required.