Trail Running calendar near Llanberis 2025-2026

Brutal Extreme Triathlons presents multiple intense triathlon races over four days in stunning Llanberis. Test your endurance amid dramatic Welsh mountain scenery in mid September 2026 with fellow athletes who crave a true challenge.

The Abersoch Half Marathon will take place in Abersoch on Saturday 19 September 2026. You can run 13 miles.

Twin Peaks & Ras Consti in Aberystwyth is a scenic coastal race mixing paths, roads and rocky climbs. Seniors run 11.7 km with climbs of Pen Dinas and Constitution Hill while juniors race shorter routes finishing on the promenade.

Tackle a 35.5 mile single day ultra from Wigan to Tarporley, Day 4 of the MTC ALBION end to end challenge. Entries are tiny and spots fill fast so expect strict cutoffs, full tracking and a medal for finishers.