Marathon Eryri (Snowdonia Marathon)
Race Day Weather
Cool start, warming finish
Runners will face a cool start at 47°F, warming to 53°F by mile 25 before finishing at 50°F. Winds will be light, with maximum speeds of 7 mph, creating a crosswind effect early and a tailwind from miles 9 to 13. With humidity around 73%, pacing adjustments may be necessary, especially as the course climbs significantly in the first half, requiring careful energy management.
This course climbs 833 ft to its high point and back, so we forecast it at 2 points, not just the start line. At 9:00/mi, you start at 47° and finish around 2:25 PM in 50°.
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Race Info
The inaugural Snowdonia Marathon was held in 1982, and was conceived as a dramatic alternative to the numerous city and town races becoming so popular. The demanding and spectacular route, encircling Snowdon, Wales’ and England’s highest peak, has given the event a unique place in the annual marathon calendar ever since. Source
