This year's edition has been cancelled

ST Lawrence Marathon

25 Apr 2020 (Sat)


5km, 21.10km, 42.20km, 10km

ST Lawrence Marathon

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Join ST Lawrence Marathon

This is the annual running of the Cornwall St Lawrence Marathon. In previous years this event included: 5k. 10k and a half marathon. This years event will also include a 42k.Over 600 runners from many parts of Ontario, Quebec, northern New York state and Michigan take part in a 5K, 10K, half-marathon or full marathon to support our local chapter.The run is designed as a training run for many who plan to run in the Ottawa marathon. There is a huge contingent of runners in the Cornwall area that take part to support our chapter and we are fortunate to have great corporate partnerships for this event.The marathon has been certified and is a Boston Qualifier.

Course Highlights

The marathon course is a point to point. It starts at the Crysler Marina, just west of historic Upper Canada Village near Morrisburg. Particiapnts will be bussed to the Start Location from St. Lawrence College. The route follows the bike path to the Long Sault Parkway entrance at Ingleside. It then continues along the parkway to Long Sault where it re-joins the bike path and follows it along the waterfront to the finish line at St. Lawrence College. The terrain is mostly asphalt pathway. There are a few short sections of firm trail on a bed of soft pine needles.
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After Race Services

Plenty of post-race refreshments. Showers are also available at the college for runners.

Aid Stations

Aid StationsAid stations for all races will be spaced approximately every 3 kilometers. Aid stations will include both water and gatorade. Certain stations for the Marathon and Half-Marathon will also include energy gels.

Award Medals

Free Technical T-shirts for the first 300 entrants. Finisher medals for the marathon; age group award medals for the other races.

Equipment Storage

Marathon Clothes TossMarathon runners will be able to leave warm-up clothes at the start line area. In addition, clothes may be left at any of the aid stations along the way. All clothes left at the start line and from each aid station will be returned to the finish line and may be claimed when you have finished.

Maximum Time

Marathon Time Cutoff The St Lawrence Marathon does not wish to discriminate against slower runners. We are a volunteer organization and some of the race-day costs we incur are paid for by the hour. We wish to provide as much support as possible to our runners and ensure a safe environment. At this time, we are unable to support runners with an expected finish time beyond 5 hours and 30 minutes. Runners who arrive at the half-way mark after 9:45AM will be given an official time for a half-marathon, and offered a ride back to the finish. If runners decide to continue onward, we can not guarantee the aid stations will be available to them. Runners who arrive after the official cutoff time, may send us their time for an unofficial finish time, and we will be happy to provide them with a medal.


Timing by Sportstats. As this course is officially certified, and can be used for Boston Marathon Qualifying, all ahtletes must run the complete length of the certified route.



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ST Lawrence Marathon

check_circle 24h ticket cancellation

check_circle Lowest price guaranteed

check_circle Deals & Discounts

Claim this event if you are the organizer

The race information has been found on the official website of the event or through publicly available sources. Always refer to the official website the latest race information. Please let us know if any data is wrong or missing, by emailing us.