St. Lawrence Marathon
Race Day Weather
Cool start, steady tailwinds
Runners will face a cool start at 42°F, gradually warming to 55°F. Light winds from the WSW will provide a tailwind for most of the race, particularly beneficial in miles 1-13 and 16-20. With humidity at 53%, adjusting pace conservatively early on is advised to manage the temperature rise, especially through the flat course.
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 10:56 AM in 50°.
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Race Info
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
