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Trail Running100 Miles
Eryri 100M
7 May 2027
Llanberis, Wales, United Kingdom
Race details
Modality
Individual
Organizer
Ultra Trail Snowdonia
Distance
168 km
Elevation
+9,500 m
Terrain
Trail
Difficulty
Elite
Course profile
Mountainous
Minimum age
18+
Certified
Yes
Circuit
UTMB World Series
Event description
The Eryri 100M is a premier ultra-trail event taking runners through the rugged and technical terrain of Snowdonia National Park in Wales. Starting in Llanberis, the course features a massive 9,500m of elevation gain, making it one of the most challenging 100-mile races in the United Kingdom.
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Sport
Trail Running
Distance
100 Miles
Country
United Kingdom
Region
Wales