Snowdonia in a Day

Conwy, United Kingdom • 7 Jun 2025

Snowdonia in a Day is a challenging endurance event held in Snowdonia National Park, Wales. Participants traverse 60 km (40 miles) along the Snowdonia Skyline, gaining 4,500 meters in elevation while crossing 24 mountains across the Carneddau, Glyders, Snowdon range, and Nantlle. The route starts in Conwy in the east and finishes in Nebo in the west, primarily on mountain trails and high mountain terrain.

This fully guided and supported challenge includes experienced mountain runner guides, refueling stations with hot and cold food, transport between start and finish, and a support vehicle for drop bags. It is ideal for runners preparing for the Dragons Back race. Visit the organization's website for the most recent information.

Race information

65 km
65km (40 Miles)
Visit the organization's website for the most recent information.
Trail runs nearby

A fell race of 8.7 km with 700 m ascent around Moel Siabod, partially marked and requiring navigation. Entry on the day is £5 and junior races are included as part of the Capel Curig Village Festival.

A running race from the Druid Inn near Llanferres covering 8 km with 366 m of climb. The course is BS partially marked and entry is £4 on the day; parking is limited so car sharing is advised.

Nant Gain is a fell race near Cilcain covering 7.6 km with 370 m of ascent, starting and finishing at the Cilcain Waterworks and registering at The White Horse Pub. Entry is £3 on the night and minimum age is over 16.

Trail races in Llanberis, Eryri Snowdonia offering 10K, half marathon, marathon and a 57 km ultra, with routes via Rhyd Ddu, Beddgelert, Nant Gwynant, Pen y Pass and Yr Wyddfa and chip timing.

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