Eryri by UTMB is a trail running event that takes place over 14–16 May 2027 at Llanberis, North Wales, United Kingdom. It is part of the UTMB World Series. It offers races in the UTMB World Series 100M, 100K, 50K and 20K categories. The event is organised by UTMB Group. Visit the official event website for full details and registration.

Listing only: ToughASIA is not the organiser of this event. Please refer to the official event website for registration and details. Organisers may contact us to update or remove this listing.