That Dam Hill

That Dam Hill is a marathon and ultra marathon event held annually in London, Ontario, at Springbank Park. The races include a variety of distances and formats such as a Charity 5K Fun Run/Walk, half marathon, full marathon, 6-hour, 12-hour night, 24-hour timed races, and a 24-hour relay. The course is certified and serves as a Boston Marathon qualifier, featuring a modest hill that is more of a molehill than a challenge.

The event is volunteer-run, with all net proceeds supporting cancer research through the Dunn with Cancer charity. It offers a spectator-friendly atmosphere and has raised over $1.2 million for cancer research since 2020. Visit the organization's website for the most recent information.