See MLive: Sled-dog races go from dream to reality; three new events in Michigan for 2010
A related activity is Skijoring, and it has been becoming much more popular in Michigan since the 1990's. See OYB: Skijoring in Michigan!
The wonderful little town of Steamboat Springs is the western capital of skijoring; there is not a skijoring capital in the eastern U.S., which town in northern Michigan will embrace the title?
If you want to get started I have been happy with Black Ice Dog Sledding Equipment
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