Llanberis
Trail Running Calendar near Llanberis 2026-2027
Explore the top trail runs near Llanberis for 2026-2027! We've gathered 40 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
August 2026
A hill race near Porthmadog covering 7.2 km with 564 m of ascent, partially marked and requiring navigational skills and experience. Entry is day only for £5 and teams may enter free.
September 2026
Coastal ultra events on Anglesey offering a 130-mile clockwise island circumnavigation and a separate ~47-mile coastal route along the Isle of Anglesey Coastal Path.
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 mountain race over the three peaks of the Eifl near Pwllheli with about 490 m of ascent. Main race for over 16s with entry on the day £10; junior races are held with a £3 entry.
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.
Lake to mountain triathlons in Llanberis with swim laps in Llyn Padarn, 28 mile bike laps and a mountain ascent of 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.