St. Lawrence Marathon
St. Lawrence Marathon race day weather
Cool start, warm finish ahead
Runners will face a cool start at 42°F, gradually warming to 50°F by the finish. A light tailwind will assist from the start through the halfway mark, with a brief crosswind around miles 14-15 and 21-22. With an average humidity of 53%, conditions will remain comfortable, allowing for steady pacing throughout, but runners should consider hydration as they approach the warmer finish.
The finish is 20 miles from the start, so we look at it at 2 points, not just the start line. In a typical year, at 9:00/mi, you start at 42° and finish around 10:55 AM in 50°.
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About the St. Lawrence Marathon
A Boston-qualifier marathon that follows the St. Lawrence River from Crysler Park Marina to St. Lawrence College in Cornwall, Ontario. Half marathon, 10K, and 5K distances follow the Great Lakes Waterfront Trail along the same stretch of river. The course has a net downhill elevation profile. Source
