Ultra-Trail Snowdonia by Utmb
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Ultra-Trail Snowdonia by UTMB
Ultra-Trail Snowdonia by UTMB is a UTMB World Series trail running event based in Llanberis, North Wales, scheduled for 15 to 17 May 2026. The programme runs across the Eryri Snowdonia landscape and features technical trails with substantial elevation gain.
The event comprises multiple race distances and formats held across the three days:
- 164 km UTS 100M, 9500 m+ ascent
- 104 km UTS 100K, 6500 m+ ascent
- 56 km UTS 50K, 3400 m+ ascent
- 25 km ERYRI 25K, 1400 m+ ascent
In 2025 the event attracted more than 2,800 runners from over 60 nationalities across its four distances. Race entries for some distances are listed as full; other races show open registration and published entry fees. Event materials include runner information pages covering required experience, mandatory kit, race regulations, and practical visitor details such as travel and parking. The event also presents an Ultra-Trail Village and other on-site services for participants and visitors. Visit the organization's website for the most recent information.
