Hotels & camping
ACCOMODATIONS
Hampton Inn - Elkhorn
Super8 - Whitewater
Baymount Inn and Suites - Whitewater
AmericInn - Elkhorn
Bed and Breakfasts in Wisconsin
Velveteen Rabbit Guesthouse - Fort Atkinson
Cross Roads Motel - South of LaGrange
Campgrounds - Kettle Moraine State Forest
Scenic Ridge Campgrounds - Whitewater
If you're looking for a site at a state park, you can reserve them through https://wisconsin.goingtocamp.com/
Under park, search for Kettle Moraine - Southern Unit. That should bring up a map similar to the one below.
Currently, Pinewoods campground (near Scuppernong trails and north end of 100k/100m course) has 30+ tent sites available. The course runs very close to Loop 3 sites
Also, Whitewater Lake campground (near south end of 100m course) has 30+ tent sites available. The course runs close to the southern edge there.
Ottawa Lake looks filled up or has partial availability (meaning only Fri or only Sat are available)
Here's a map of southern kettle forest , purple box is approx start/finish location and faint red line is the Ice Age Trail.