St. Lawrence Marathon

Apr 27, 2024

Saturday, April 27th
Cornwall and SDG Counties

Register now

St. Lawrence Marathon

Challenge yourself at one of eastern Ontario’s most scenic and affordable races!

The St. Lawrence Marathon returns on Saturday, April 27th with the popular marathon – a certified Boston qualifier – as well as a half marathon, 10K and 5K run along the beautiful Waterfront Trail.


Registration for all races is now open – and it’s filling up fast so don’t delay!

You can register online via Race Roster (click here to register).

Additional information

For additional information on the St. Lawrence Marathon, please visit the official website or check out their Facebook page.

We’re here to help!

Got questions? Looking for recommendations? Cornwall Tourism is here to help! Text us anytime at 613-938-4748 and we will be happy to assist with any questions you might have.


Looking for other fun things to do in Cornwall? Check out the Explore section of our website for other fun-filled activities to keep you busy. Better yet, consider extending your stay with a night at one of our great accommodations!