When
Oct 24, 2026
Starts at 10:30am BST
Weather
Forecast
🌧️ Rain · 8°C–15°C
· 100% · Wind 41 km/h
Registration
Registration Closed
Closed December 8, 2025 · 11:59 PM GMT
Website
Official website →
Event Details
The first Marathon Eryri (then called the Snowdonia Marathon) was held in 1982 and was the brainchild of local man Ken Jones. Following the success of the first London Marathon the year before, he really believed that something similar could work here in Eryri. He worked closely with John Disley and Chris Brasher (co-founders of the London Marathon) and delivered a race that was to become an iconic event on the running calendar. Ken organised the race again in 1983 before handing the reins over to the National Trust in 1984.
Event type
Full-Marathon
Distance
42.2 km
Surface
Road
Registration opens
December 1, 2025 · 12:00 PM GMT
Registration closes
December 8, 2025 · 11:59 PM GMT
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