This particular route provides scenic views of Lake Michigan, paved roads with minimal traffic, an uphill challenge, and a blistering fast ride downhill!
You can also add a side trip to the ferry to Washington Island. The island provides some low-traveled roads good for biking, however there isn't too much traffic in this area when you aren't on STH 42. If you haven't been to Washington Island, it can offer a nice break on the ferry ride with the novelty of the island. However, you can save yourself the expense and find plenty of other places to ride in Door County with minimal traffic and great views.