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Ultra-Trail Snowdonia by Utmb

Llanberis, United Kingdom • 15-17 May 2026

Event information

Ultra-Trail Snowdonia by UTMB is a UTMB World Series event held in Eryri (Snowdonia), North Wales. The races use technical mountain trails across the national park. In 2025 the event attracted more than 60 nationalities and over 2,800 runners across four distances.

The event schedule in 2026 is mid May. The races are classified within the UTMB World Series and each race carries a Running Stones value.

Races and entries

  • 164 km - 9500 m+ elevation gain; Running Stones: 4; Date: 15 May 2026
  • 104 km - 6500 m+ elevation gain; Running Stones: 3; Date: 16 May 2026
  • 56 km - 3400 m+ elevation gain; Running Stones: 2; Date: 16 May 2026
  • 25 km - 1400 m+ elevation gain; Running Stones: 1; Date: 17 May 2026

Registration notes and prices shown on the event page include: UTS 100M listed at £299, UTS 100K at £239, UTS 50K at £189, and ERYRI 25K at £139 (prices exclusive of an 8% booking fee). The UTS 100K and UTS 50K were marked as "Race full - General registrations closed" on the page. Visit the organization's website for the most recent information.

United Kingdom Wales Llanberis

Race information

Website
UTMB 20K UTMB 50K UTMB 100K UTMB 100M
164 km
9500 m+
Uts 100m
104 km
6500 m+
Uts 100k
56 km
3400 m+
Uts 50k
25 km
1400 m+
Eryri 25k
Visit the organization's website for the most recent information.
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