St Lawrence Marathon

April 25, 2026

Saturday, April 25th @ 5am
St. Lawrence College

STLM Logo for 2026

The event features four race distances — 5K, 10K, Half Marathon, and Full Marathon — and draws runners from across Eastern Ontario, Quebec, and beyond to experience a fast, scenic route along the St. Lawrence River.

Event details

  • Event: St. Lawrence Marathon
  • Date: Saturday, April 25, 2026
  • Distances: 5K • 10K • Half Marathon • Full Marathon

Additional information

For additional information visit their website, please click here.

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

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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!

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