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St Lawrence Marathon

[Previously the Cornwall Run to End MS]

The St Lawrence Marathon - marathon, half-marathon, 10K and 5K run. We're a certified Boston-Qualifier.

The marathon start time is at 7am

18 and under, 70-79 will get 40% off

80+ can run for free

This discount will be applied automatically at checkout.


There are no refunds or deferrals. Please purchase the Race Roster Protection if you want to be eligible for a refund.

Registration fees

Prices are inclusive of mandatory charges, items, and fees

Marathon Closed

  • 42.2km *Boston Qualifier*

    1. CA$83.94

      Early bird pricing

      Registrants 1 – 50
    2. CA$92.12
      Registrants 51 – 100
    3. CA$100.28
      101 – Unlimited

10K Run Closed

    1. CA$34.93
      Registrants 1 – 50
    2. CA$40.37
      Registrants 51 – 100
    3. CA$45.82
      101 – Unlimited

Half-Marathon Closed

  • 21.1km

    1. CA$62.15
      Registrants 1 – 50
    2. CA$70.33
      Registrants 51 – 100
    3. CA$78.50
      Registrants 101 – 175
    4. CA$86.66
      176 – Unlimited

5K Run Closed

    1. CA$34.93
      Registrants 1 – 50
    2. CA$40.37
      Registrants 51 – 100
    3. CA$45.82
      101 – Unlimited

Event schedule

  • Sat, April 25, 2026 5:45 AM - Buses leave St. Lawrence College for Marathon Start Line
  • Sat, April 25, 2026 7:00 AM - Marathon Start (Crysler Marina)
  • Sat, April 25, 2026 9:00 AM - Half Marathon Start (St. Lawrence College)
  • Sat, April 25, 2026 10:00 AM - 10km Start (St. Lawrence College)
  • Sat, April 25, 2026 10:30 AM - 5km Start (St. Lawrence College)
  • Sat, April 25, 2026 11:30 AM - Awards Ceremony (St. Lawrence College)
  • Sat, April 25, 2026 1:00 PM - Finish Line Closes

Contact information

Event contact
Race Director
Website
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