I'm going to plug the Port Huron KOA here one more time LOL (
Port Huron KOA | Camping in Michigan | KOA Campgrounds ).
We don't have a dog but have noticed that they also have a "Kamp K9" area--including an agility course. There also is a hiking trail around a small lake and if fido needs/wants a longer run/walk the camp backs up to a rails to trails route that is over 10 miles long (with a really cool trestle bridge at one end:
https://www.stclaircounty.org/office...s/wadhams.aspx )