St Lawrence Marathon
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Event details
The St Lawrence Marathon takes place on April 25, 2026 at St. Lawrence College in Cornwall, Ontario, Canada. The event includes a marathon, half-marathon, 10K and 5K. The marathon is a certified Boston-qualifier and its start line is at Crysler Marina; the half-marathon, 10K and 5K start at St. Lawrence College. Buses will transport marathon participants from St. Lawrence College to the marathon start. An awards ceremony is scheduled at St. Lawrence College and the finish line will close later in the day. The event page lists 459 registered participants.
Registration and fees
Registration spots remaining, as listed: marathon - 150; half-marathon - 81; 10K - 91; 5K - 143. Registration fees are shown as inclusive of mandatory charges. The page lists tiered pricing bands for each distance. There are no refunds or deferrals; purchasing Race Roster Protection is required to be eligible for a refund. Age-based discounts apply automatically at checkout: 18 and under and ages 70-79 receive 40% off, and ages 80+ may register free. Visit the organization's website for the most recent information.
- 42.2 km (marathon, Boston-qualifier)
- 21.1 km (half-marathon)
- 10 km
- 5 km
