Just finished up a new track that takes in up to 30 waterfalls in NW Wisconsin and the western UP of MI. The path is 263 miles long. It can be done in one long day, or if you spend more time at the falls (or do some walk-ins), it makes a nice two-day trip. It is also within range of the Central ADV Rally. A very nice ride through some scenic country. Big bike friendly (mostly).