The state of Michigan is much larger than most people realize. Travel time from the Detroit area in Southeastern Michigan to Copper Harbor (a northwestern tip) in the Upper Peninsula is approximately 12 hours. The Upper and Lower Peninsulas both have incredible sites.
The UP is very rural with lots of state and national forests/parks that are very beautiful. Highlight stops include, the Soo Locks, in Sault St. Marie, the Museum at Whitefish Point, Pictured Rocks in Munising, Copper Harbor, Isle Royale, Fayette State Park, and Tahquamenon Falls. The UP is a week trip by itself going along the Lake Superior coast on the north and Lake Michigan coast on the south.
The circle tour of the lower peninsula of Michigan takes you along the coasts of Lake Erie, Lake St. Clair, Lake Huron and Lake Michigan, traveling east to west.
The biggest tourist attraction in Southeast Michigan, Detroit Metro Area is "The Henry Ford", in Dearborn, MI. It includes Greenfield Village, Henry Ford Museum, IMAX theater and a Ford Factory Tour (F-150 being built). You could easily spend 3 days if you wanted to see it all. Trying to see some of the Village and some of the museum in one day is possible, if you plan to spend 4 hours in each. The closest campground I would recommend to stay at is about 30 minutes away.
Ann Arbor, home of the University of Michigan is about 30 minutes away from Dearborn and The Henry Ford. There is a huge art festival held the end of July. Football weekends in the fall are crazy.
Michigan International Speedway (MIS) is in an area called the Irish Hills, south of I-94. In the summer and during race season, the area is jammed. There are lots of lakes, campgrounds, state land, farms, etc. in the area. The upcoming Midwest (Michigan) Meet & Greet is being planned for the west side of the Irish Hills. MIS is on the eastern side of the Irish Hills area.
About an hour north of Metro Detroit (off I-75) is Frankenmuth. It's a German town that has the largest Christmas store (Bronner's). There are 2 restaurants that are world famous for their chicken dinners. We've stayed at the Yogi Bear campground in town a number of times. Even if you don't stay in Frankenmuth overnight, it's worth a stop at Bronner’s and for chicken lunch or dinner.
The upper portion of the state is very scenic. The topography changes about mid state. We get an "up north" feel just north of Bay City (along I-75). If you're willing to travel further north, we'd recommend Mackinac Island. (about a 6 hour drive from Detroit). Cars are not allowed on the island, ferries run across about every 20 - 30 minutes from May - Oct. You can take your bikes (or rent) to use on the island. The Grand Hotel is something to see. Horse drawn carriage rides are available for guided tours of the island and historic fort. Mackinac Island Fudge is a must! The Mackinac Bridge can be seen from Mackinaw City, St. Ignace, the ferry or the island. You don't have to cross the bridge to St. Ignace to go to the Island.
On the northwest side of the state, the major cities along the water are Petoskey, Charlevoix and Traverse City. Traverse City is the cherry capital and we are partial to the area. Besides everything being cherry, there are a number of wineries in the area that may be toured. The Cherry Festival runs the first week of July. There are beautiful inland lakes, with Little Traverse Bay, Grand Traverse Bay and Lake Michigan surrounding the area. Sleeping Bear National Lakeshore and Sand Dunes on the shore of Lake Michigan is incredible. The main dune is over 400 feet tall. We kayak the Platte River which ends up at Lake Michigan. The view is breathtaking. Torch Lake is an inland lake rated one of the top 3 most beautiful. It's 18 miles long and the color rivals the Caribbean. We spend much of the summer in the area.
On the southwestern side of Michigan, along Lake Michigan are a number of unique towns. Ludington has a great state park and a ferry that runs across Lake Michigan to Wisconsin. Grand Haven is a Coast Guard city that has the musical fountain. Holland hosts the tulip festival in May. Saugatuck has a nautical feel in a small town with many art galleries.
Check out the www.Michigan.gov
website, click travel & recreation. That will give you more info. www.marvac.org
has a listing of many campgrounds.
I know there are lots more places that others may add, but these are a few of our favorites.