Near the headwaters of the Little Eau Pleine River, McMillan Marsh Wildlife Area is a diverse landscape of wetlands, woodlands and grasslands. The area is approximately 6,500 acres and is located in the southwest corner of Marathon County, just one mile north of Marshfield’s city limits. The area is managed by Department of Natural Resources personnel stationed at the George W. Mead Wildlife Area headquarters. The property is open to hunting and trapping during the regular seasons, except for designated refuge areas. A seasonal 5.5 mile bicycle trail (combination of lime and gravel) is open May 1–August 31 (trail begins at the end of Meadow Avenue). The biking trail is closed during the fall from September 1 – December 10 when the Refuge Lines go into effect. Other recreational activities include hiking and wildlife viewing. . Other recreational activities include hiking and wildlife viewing.