Llanberis
Trail Running Calendar near Llanberis 2026-2027
Explore the top trail runs near Llanberis for 2026-2027! We've gathered 38 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2026
A 102 mile self navigation ultra across Snowdonia with 11 checkpoints, live GPS tracking, mandatory mountain kit and a 42 hour cutoff.
A 14.5 km fell race from The Gladstone near Penmaenmawr with 855 m ascent on partially waymarked upland terrain; competent navigation and mountain skills are required.
A six day 380 km multi stage ultra across the spine of Wales from Conwy Castle to Cardiff Castle with mandatory maps, trackers and overnight camps.
An 8 km fell race on 12 September 2026 around the three peaks of the Eifl with 490 m of ascent, junior races and entry on the day.
Coastal trail races in Abersoch on the Llŷn Peninsula offering 2K, 10K and 20K routes that start and finish on the beach with medals, drink stations and chip timing.
Multi-lap triathlon in Llanberis with lake swims in Llyn Padarn, multiple 28 mile bike laps and a mountain run up and down Yr Wyddfa.
AL graded fell race from Llanberis with full 28 km 2600 m and half 14 km 1350 m routes over Elidir Fawr, Glyder Fawr and Snowdon.
A multi day 286 km mountain race across Wales with solo and team entries, five indoor checkpoints and a 108 hours time limit.
A fully waymarked, supported Sea to Summit ultramarathon from Caernarfon Castle to Yr Wyddfa covering 29 miles and over 5600 ft of ascent on 26 September 2026.
October 2026
A guided 13 km loop around Llyn Trawsfynydd in Southern Snowdonia on runnable trails with limited ascent and regular regrouping stops.
November 2026
Trail races at Newborough Forest and Llanddwyn Island, offering 10k and half marathon distances, chip timing, on course support and bilingual services.
6 mile out and back fell race from Llanfachreth village hall, 579 m ascent to the summit, opening the Meirionnydd Winter Series and listed in the WFRA North Wales Series Final.
A Snowdonia trail event in November 2026 with a 147 km and an 80 km route, significant elevation gain, aid stations, drop bags and set cut off times.
A guided 55km route on Anglesey taking in three of the island's highest tops, with over 2000 m ascent, checkpoint support and a wooden finishers medal.
A 16.1 km fell race near Capelulo with 594 m of climbing, partial route marking and navigational requirements; online entry only, minimum age over 18.
A guided 10 km trail run from the Sychnant Pass summit featuring runnable terrain, regular stops and a steady group pace on an upland route.