Not very long, but very scenic with some nice towns and camping options along the way.
I've ridden the 4 Trails Tour (101 miles). Not very long, but very scenic with some nice towns and camping options along the way. Perrot State Park and the city campground in Wilton come to mind. The Wilton campground has good showers(and a pool) and they may still have a Sunday morning pancake breakfast at the pool shelter. Portions of the Sparta-Elroy trail were recently closed for a couple years due to storm damage, but I believe it's all repaired and open. The trails are a significant draw for the towns and local businesses, so the DNR keeps them in good shape.