Radnor Lake State Natural Area is set aside by the State of Tennessee for wildlife observation and protected under the State Natural Areas Preservation Act of 1971. Located just south of downtown Nashville, Radnor Lake is the largest pocket of wilderness in the U.S. in close proximity to a major city. With over 1200 acres (and growing with the acquisition of the Harris Ridge), over 6 miles of trails, and a variety of programs to keep everyone in the family busy - it's no wonder that Radnor Lake see nearly one million visitors annually. Radnor Lake can be accessed from two entrances. The east entrance (off Granny White Pike) has the largest parking area and Nature Center (with restrooms and maps). From the west, visitors can access Radnor Lake from Franklin Road. This smaller parking area does have restrooms and accesses both Otter Creek Road and the trail system. As a "Class II" State Natural Area, Radnor Lake has the most restrictive set of land management rules of any state park. Of these, there are few that hikers should keep in mind: no jogging/running on the trails, no off-trail hiking, no dogs/pets, and no food or picnicking is allowed.
Parking is incredibly difficult, to the point where it's not worth trying on a weekend after 7 am. Not much of a view away from the water, but a moderate amount of wildlife, including deer and heron. The hike up the ridge is moderate and beginners may find it a bit difficult or choose to stick with the lake trail. I enjoy it but would not recommend it as a must-see.