Brigid and I took the dogs out on a ~ 4mile cart run on Friday. We were able to use a cart that was donated to the MiDD group. The resources and trail system that Rick and Linda Lange and the MiDD group have up here in awesome...and it's just over an hour from our house!
http://www.michigandogdrivers.org/
http://lastchanceretreatandtrails.blogspot.com/