42.2 km
Marathon
Boston Qualifier
Road Race
42.2 km
- 10K
- 5K
- Half Marathon
- Marathon
- Road
St. Lawrence Marathon 2027
- Cornwall, ON
Organized by St. Lawrence Marathon
Overview
St. Lawrence Marathon returns to Cornwall on April 24, 2027. The official site lists Marathon, Half-Marathon, 10km and 5km distances.
Pick your distance
21.1 km
Half Marathon
10 km
10K
5 km
5K
Highlights
The 2027 race date is Saturday, April 24.
The official site lists Marathon, Half-Marathon, 10km and 5km options.
Course
- Surface
- Road
- Location
- Cornwall, ON
Course details
The official site describes a route along the St. Lawrence River and the Great Lakes Waterfront Trail, finishing in Cornwall.
About the organizer
Organizer
St. Lawrence Marathon
More races like this
Other editions
Listing freshness
The Running Directory combines organizer-provided details, official race links, and ongoing listing research. Always confirm final dates, prices, times, and course details with the race organizer before registering.
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Details checked October 7, 2026
