I have now added the Snowdon Ultra 100 miler to my 2025 race calendar. This will be leg 4 of 4 of my attempt at the GB ULTRAS 100 mile 2025 Grand Slam. The race takes place on Saturday 6th September 2025, has over 5,700m of elevation gain and has a tough 40 hour cut off.

The Incredible Yr Wyddfa Ultra 100 Mile Race! With Checkpoints spanning Snowdonia National Park and over 100 stunning miles over the beautiful mountains of Snowdonia Eryri!

The route leaves Betws-y-Coed (finish line for the 50 mile event) and heads to Beddgelert via the Snowdonia Slate Trail before heading through Nant Gwynant Valley passing Sygun Copper Mine, Llyn Dinas and Llyn Gwynant. 

There are still places remaining if you want to challenege yourself this year, by application only, so be quick to apply if this is a race you are considering.