Kettle Moraine 100 Endurance Runs Whitewater, WI   Jun 13, 2026

Kettle Moraine 100 is one of the oldest 100 mile races in the country. The intent is to make this an enjoyable experience as you take on the 50 km, 38 mile, 100 km, 100 mile solo or 100 mile relay run options laid out for you. We sincerely hope that everyone finishes, and will do all that we can to insure that the best interests of the runner are at hand. There are no qualifying requirements for the Kettle Moraine 100. Once the race fills, no new race registrations will be accepted. You may register for the 38 mile fun run the day of the race.

The 100 mile course will run entirely on trails (except for a couple hundred feet of road crossings) and will traverse the Ice Age National Scenic Trail (IANST) for about 65 miles. The runners deviate from the IANST when near the Nordic Trails at the start/finish and also near the Scuppernong turn around between miles 27-35. The 100 mile (solo and relay) events follow the entire length of the course, while the 100km event only follows the first 62 miles, the 50km follows the second half of the 100km course and the 38 mile fun run follows the last 38 miles of the 100 mile course. 

KM100 is a qualifying race for Western States.