Ultra-Trail Snowdonia by Utmb

Llanberis, United Kingdom • 15-17 May 2026

Ultra-Trail Snowdonia by UTMB

Ultra-Trail Snowdonia by UTMB is an international trail running event held in Llanberis, North Wales. As part of the UTMB World Series, the event takes place across the rugged wilderness and landscapes of Eryri Snowdonia. The race features technical trails and attracts over 2,800 runners representing more than 60 different nationalities.

The event offers several race categories with varying distances and elevation profiles:

  • UTS 100M: A 163 km course with 9200 m of elevation gain.
  • UTS 100K: A 100 km course with 4400 m of elevation gain.
  • UTS 80K: A 78 km course with 2500 m of elevation gain.
  • UTS 50K: A 56 km course with 3400 m of elevation gain.
  • ERYRI 25K: A 25 km course with 1400 m of elevation gain.
  • ERYRI MINI: A dedicated race for children.

Each distance provides successful finishers with Running Stones, which vary from one to four depending on the specific race completed. Participants must adhere to specific race regulations, including mandatory kit requirements and registration conditions based on required experience. The event also hosts an Ultra-Trail Village and offers car parking facilities for visitors and competitors. Visit the organization's website for the most recent information.

Race information

UTMB 20K UTMB 50K UTMB 100K UTMB 100M
164 km
Uts 100m
104 km
Uts 100k
77 km
Uts 80k
56 km
Uts 50k
25 km
Eryri 25k
Visit the organization's website for the most recent information.
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