A taste of Eryri's mythical mountain trails
Other trail races within 199 miles
Named after Eryri — the ancient Welsh for 'land of the eagles' — the ERYRI 25K is a 25km loop from Llanberis that visits Yr Wyddfa (Snowdon) and explores the scenic mountain trails of Eryri National Park. With 1,400m of elevation gain and a 5.5-hour cutoff, it's a challenging but accessible introduction to the UTS weekend. All finishers earn 1 Running Stone, making them eligible for the UTMB Mont-Blanc ballot.
Some ultra experience recommended
Llanberis, Wales, United KingdomMay 17, 2026
Ultra-Trail Snowdonia ERYRI 25K is a loop trail race in Llanberis, Wales, United Kingdom, held on May 17, 2026. The course covers 25 km, climbs 1,134 m, and has a 5h30m cutoff.
| Location | km | Elevation | Cutoff |
|---|---|---|---|
Llanberis Start | 0.0 | 105 m | — |
Bron y Fedw Aid Station | 13.2 | 151 m | — |
Llanberis Finish | 25.0 | 105 m | 6h2:00 PM |
Aid station details for this race are still being filled in. Cutoffs and access rules come from the race’s own published information and can change — check the official race details before planning around them.
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
Snowdon's summit weather can be dramatically different from valley conditions — expect wind, rain, and potentially low cloud
No required gear specified
No recommended gear specified
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