Horicon Marsh Autotour is a 3.1 mile moderately trafficked loop trail located near Brownsville, Wisconsin that features a river and is good for all skill levels. The trail offers a number of activity options and is best used from April until October.

3.1 miles
55 feet

wheelchair friendly

kid friendly

nature trips

road biking

scenic driving






wild flowers


Horicon National Wildlife Refuge was established in 1941 to provide an undisturbed sanctuary for a number of migratory birds and waterfowl including the redhead duck as well as to provide opportunities for people to connect with nature. Horicon Marsh is a shallow, peat-filled lake bed scoured out of limestone by the Green Bay lobe of the massive Wisconsin glacier. The marsh itself is approximately 14 miles long and ranges from 3-5 miles in width. The northern two-thirds of Horicon Marsh is managed by the U.S. Fish & Wildlife Service as the 22,000 acre Horicon National Wildlife Refuge. The southern third of the marsh, 11,000 acres, is managed by the Wisconsin Department of Natural Resources as Horicon Marsh State Wildlife Area. At more than 33,000 acres, Horicon Marsh is one of the largest freshwater marshes in the United States and is a critical rest stop for thousands of migrating ducks and Canada geese. It is recognized as a Wetland of International Importance, as both Globally and State Important Bird Areas, and is also a unit of the Ice Age Scientific Reserve.

road biking
1 month ago

My children (grade school aged) enjoyed a summer bike ride on the paved Horicon Marsh auto tour route. I suggest this activity on a weekday (less traffic), and avoid late AM-early PM hours due to limited areas of shade during summer months. It will be easy to lengthen our family bike ride to include the Wild Goose State Trail (rail to trail) in the future; a connecting trail exists. This is a favorite location to see animals, especially birds; there are additional options to hike on a floating boardwalk or dike road.