Eryri by UTMB
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Eryri by UTMB
Eryri by UTMB is the new name for Ultra-Trail Snowdonia from 2027. The event takes place in and around Llanberis, North Wales, and is part of the UTMB World Series. The route uses trails within Snowdonia National Park, which reverted to the historic Welsh name Eryri in 2022.
The organiser presents a programme of long-distance trail races with significant elevation gain. The 2027 race set includes the following distances and elevation figures:
- Eryri 100M: 163 km, 9200 m+
- Eryri 100K: 106 km, 5400 m+
- Eryri 80K: 78 km, 2500 m+
- Eryri 50K: 56 km, 3400 m+
- ERYRI 25K: 22 km, 1100 m+
In 2026 the event attracted more than 60 nationalities and over 2,800 runners. Information published by the organiser notes the races run on technical trails across varied mountain and upland terrain. The event listing includes race regulations, mandatory kit, required experience, and practical information such as travel and parking. Visit the organization's website for the most recent information.
