Wetlands, wildlife, sandstone bluffs, rolling croplands and pastures are just a few of the sights you can enjoy on the 400 State Trail as it repeatedly crisscrosses the Baraboo River. The entire length of the 22-mile trail follows along the river valley from Elroy to Reedsburg.

The trail is named for the Chicago-Northwestern passenger train that ran on this grade. The train traveled the 400 miles between Chicago and Minneapolis/St. Paul in 400 minutes. The renovated Reedsburg Depot is the trail headquarters and the office for the Reedsburg Chamber of Commerce. The depot is used as an information center with interpretive displays and public rest area facilities.

The 400 State Trail is directly linked to two other state trails. The Elroy-Sparta State Trail connects to the 400 State Trail at Elroy Commons on the west end. There is also a connection in Union Center to the Hillsboro State Trail.