Marl Flat Forest Preserve

32609 N. Fish Lake Road Round Lake, IL 60073

Phone: 847.367.6640

Website | Reservations | Map

This scenic preserve is part of an Advance Identification (ADID) wetland complex because of its high quality wildlife habitat and native plant communities in wetlands around the lake. 

While there are no preserve trails here, Marl Flat does provide trailhead parking for our regional Millennium Trail system. Today, 33 miles of the Millennium Trail are currently open to hikers, bicyclists and cross-country skiers. An 11-mile section from Lakewood north to Singing Hills is also open to equestrians. The 1-mile paved section of Millennium Trail that runs through Marl Flat is open for hiking, biking, hiking and cross-country skiing. Please keep dogs leashed and on trails at all times, and pick up after them. Learn about our off-leash Dog Parks (permit required). Horses are not permitted. 

The preserve also has benches and an information kiosk.

No Fishing or Lake Access

The preserve's lake frontage along Fish Lake is a very sensitive natural resource area. As a condition of the land's purchase, public access to Fish Lake, including fishing, is not permitted.

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