Course
Starts at Porth Penrhyn in Bangor and follows the Snowdonia Slate Trail through the old quarry landscape. The 147km route climbs over 3,900m and has eight aid stations, a drop bag and a 36-hour limit; the 80km Ultra Tour of the Quarries climbs 2,300m with four aid stations and a 24-hour cutoff.
Key dates
- !RegistrationOpen now
- ★Race daySat 14 Nov 2026
About
An epic ultra running adventure through the stunning Snowdonia landscape, featuring two challenging trail routes that explore the historic slate quarry region. Runners will experience breathtaking mountain views and challenging terrain across two distance options: a 147km full trail ultra and an 80km quarry highlights route.
Save Slate Trail Ultra to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
-
Afan Forest Trail Half Marathon & 10K
Trail race through Afan Forest Park's valleys
-
Conwy Half Marathon
Race the Welsh coast beneath Conwy Castle and Snowdonia
-
Machen Trail Races
Trail marathon and half over the Caerphilly hills
-
Celtic Trail Races
Winter ultra, marathon and half through Welsh valleys
A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.