These trails meander through the over 5,000 acres of undeveloped State Park with 7.5 miles of Lake Huron shoreline. This undeveloped State Park provides a rustic retreat for hikers and cross-country skiers to explore the park's six miles of trails. Primitive hiking trails wander through the second growth forest, sand dunes, and limestone cobble beaches. This area is ideal for birding and hunting, and visitors are encouraged to bring a map and compass and explore the uncharted areas of the park.
MichiganTrailMaps.com says, " The park’s 6-mile trail system, partly composed of old two-tracks, is centered around three interconnecting loops ranging in length from 1.4 miles (Loop 2) to 2.6 miles (Loop 3) that can be easily combined for a 5.2-mile hike. The limestone also makes mountain biking, disdained or prohibited in many fragile lakeshore parks, an ideal activity at Thompson's Harbor. Off-road cyclists for the most part bounce along the rocky terrain following a trail system that holds up well under knobby tires spinning along the shoreline. The park’s best known natural feature, one that attracts a number of naturalists, are its colonies of dwarf lake iris. The smallish purple flower is a federally threatened species found only in Michigan, Wisconsin and parts of Ontario along the shores of Lake Michigan and Lake Huron. Click here for trail maps!