That Dam Hill Marathon and Ultra Races are back for 2020! 

September 19, 2020

Springbank Park
1085 Commissioners Road West
London, Ontario, Canada


5K Run/Walk (Charity)
½ Marathon
Marathon Relay (Charity)
12 Hour (Night) Timed Race
24 Hour Timed Race
24 Hour Relay (Charity)

8:00 AM Start Time
3:00 PM for the 5K Run/Walk
8:00 PM for the 12 Hour Night Race

Registration has been extended through to September 6!  Note, however, that folks who register after September 4 may not get a shirt.

Click here to register for That Dam Hill Marathon and Ultra Races

Please support our designated charities!
        Dunn With Cancer logo      

More than a spectator friendly certified marathon race, That Dam Hill Marathon and Ultra Races is also London Ontario’s only ultra marathon timed race. If you register for a timed race, the first 42.2km (26.2 miles) you complete will automatically give you a certified marathon time. And YES, That Dam Hill is a certified Boston Marathon Qualifier!

In addition to the marathon, the course is also certified for the following distances: Half-marathon, Marathon, 50 km, 50 mile, 100 km, and 100 mile.

And don’t worry, the hill isn’t that big. If anything, it’s more of a molehill.