This is a 22-mile hard packed crushed stone trail with endpoints at Elroy and Reedsburg. It was named for the Chicago-Northwestern passenger train that ran on this grade. It traveled the 400 miles between Chicago and Minneapolis/St. Paul in 400 minutes.

The trail goes through wetlands, sandstone bluffs, rolling croplands and pastures. Beautiful scenery, bountiful wildlife, and friendly, small town hospitality will be found here.

For detailed information on this trail, check out the official website: 400 State Trail.