Ranging from the Upper Peninsula down to Florida, I-75 follows the rough path of the old Dixie Highway. Here's places to stop along the way.
St Ignace
If it's a holiday break, you'll find students from Michigan Tech at the McDonald's.
Mackinac Bridge
No stopping on the bridge, please. You can get a nice view of it from the "Bridge View" part on the UP side.
Mackinaw City
Fudge!
Wolverine
At the wolverine exit head towards town, there is a playground and park near the river and the old depot.
Gaylord
There is an artists colony in East Jordan west of gaylord.
Grayling
Hartwick Pines is a park with a stand of old timber.
Scenic Overlook, Mile 317 Northbound
On northbound I-75 in Cheboygan County, near mile marker 317, is a Michigan Department of Transportation (M-DOT) rest area and scenic overlook. It's indicated by a solid black triangle on the state highway map.
From the main observation deck in the center, you'll have a great vantage point from which to watch the cars and trucks whizzing past on I-75. Don't be shy -- give them a wave! You'll be surprised how many will notice you and wave back; the deck is easily visible to motorists.
The Do The Wave letterbox is hidden at this rest stop, with directions to let you find it.
An I-75 exit guide has a full path for you to follow: http://www.i75exitguide.com/