Ultra-Trail Snowdonia by Utmb

MAY

15-17

2026

Run the dramatic mountain trails of Eryri Snowdonia as Ultra Trail Snowdonia by UTMB returns to Llanberis from 15 to 17 May 2026, part of the UTMB World Series. Distances span a challenging 25 km up to an epic 164 km, welcoming ambitious newcomers and seasoned mountain runners.

15-17 May 2026

Llanberis, Wales

Website

164 kilometers 104 kilometers 56 kilometers 25 kilometers

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Ultra-Trail Snowdonia by UTMB® : May 2026

Ultra-Trail Snowdonia by UTMB® is scheduled for 15 to 17 May 2026 in Llanberis, North Wales. The event is part of the UTMB World Series and takes place on technical mountain trails in the Eryri Snowdonia area. The 2025 edition featured more than 60 nationalities and over 2,800 finishers across the four distances.

Races and entries

UTS 100M - 164 km, 9,500 m+ elevation gain, Running Stones 4
UTS 100K - 104 km, 6,500 m+ elevation gain, Running Stones 3
UTS 50K - 56 km, 3,400 m+ elevation gain, Running Stones 2
ERYRI 25K - 25 km, 1,400 m+ elevation gain, Running Stones 1

Registration notes in the source: the UTS 100K and UTS 50K are marked as full. Registrations are open for the UTS 100M and ERYRI 25K. Listed entry fees (exclusive of an 8% booking fee) are £299 for UTS 100M, £239 for UTS 100K, £189 for UTS 50K, and £139 for ERYRI 25K. Visit the organization's website for the most recent information.

164 km

Uts 100m

104 km

Uts 100k

56 km

Uts 50k

25 km

Eryri 25k