Ultra-Trail Snowdonia by Utmb

MAY
15-17
2026
Experience technical trail running through the rugged wilderness of North Wales. Choose from five race distances ranging from 25 km to 164 km in the heart of Eryri Snowdonia.
15-17 May 2026
164 kilometers 104 kilometers 77 kilometers 56 kilometers 25 kilometers

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Ultra-Trail Snowdonia by UTMB

Ultra-Trail Snowdonia by UTMB is an event in the UTMB World Series held in Llanberis, North Wales. The event is characterized by technical trails through the rugged wilderness of Eryri Snowdonia, attracting participants from more than 60 nationalities. Runners navigate mythical landscapes featuring significant elevation changes and mountainous terrain.

The event offers several distinct race distances to accommodate different levels of endurance and experience:

  • UTS 100M: A 164 km course with 9500 m of elevation gain.
  • UTS 100K: A 104 km course with 6500 m of elevation gain.
  • UTS 80K: A 77 km course with 2575 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 specific race distance organized for children.

As part of the UTMB World Series, finishers of the major distances earn Running Stones, which are used for entry into the World Series Finals. The event provides various runner services including an Ultra-Trail Village, car parking, and a nutrition guide. Specific participation requirements apply, including mandatory kit lists, race regulations, and documented required experience for certain distances. Visit the organization's website for the most recent information.

164 km
Uts 100m
104 km
Uts 100k
77 km
Uts 80k
56 km
Uts 50k
25 km
Eryri 25k