Collins River Nature Trail is an easy 3-mile loop located at Rock Island State Park in Warren County, Tennessee, accessible from TN 287 across from the Great Falls Dam Powerhouse with free parking and no permits required.

The trail follows an old roadbed along the Collins River peninsula with minimal elevation gain, making it suitable for most fitness levels, and offers opportunities to view wildlife and historical homesite remnants.

The trailhead has restrooms and water available at the park office, with a connector trail option that shortens the route to 2 miles and passes by historic cemeteries.