Ready to race? Register directly on the official race website — opens in a new tab.
Register →Save this race to your wishlist, set a registration reminder, and build a full training plan on Trehko.
Jackson County Ultras is a 100k running event held in Brownstown, IN on Dec 5, 2026. The course has a trail profile.
Trehko tracks registration status, entry fees, and deadlines for Jackson County Ultras and thousands of other endurance races. Use the app to set a registration reminder and build a training plan tailored to race day.
Browse by discipline: