Ultra-Trail Snowdonia Eryri by UTMB 18 May 2025 - 18 May 2025 Amgueddfa Llechi Cymru, Llanberis, Gwynedd, LL55 4TY Snowdonia Facebook Page Facebook icon for Snowdonia Facebook page Facebook Snowdonia Instagram Page Instagram icon for Snowdonia Instagram page Instagram Snowdonia Youtube Page Youtube icon for Snowdonia Youtube page Twitter Ultra-Trail Snowdonia by UTMB