A double loop with two trailheads giving you plenty of options, hike the Keown Falls and Johns Mountain loops to explore trickling waterfalls, quiet creeks, and long-distance views. At less than an hour from Chattanooga, this is a great hike for the family and the dog.
The Keown Falls Loop begins at the Keown Fall Recreation Area trailhead and the Johns Mountain Loop begins at the Johns Mountain overlook trailhead. The two loops are joined in the middle by a short connector trail with the Keown Falls Overlook platform. The elevation graph and slope calculations are based on beginning at the Keown Falls Rec Area trailhead and heading counter-clockwise around both loops.
Since there are many options for the route you can take I won't be giving specific directions. All intersections are signed making navigation easy. If you want to tackle the uphill first, begin at the Keown Falls Rec Area. Here you'll find restrooms and numerous picnic tables and grills. Begin along the rock-lined trail next to the info sign. Look for a green blaze. The trail will quickly split to form the loop.
Taking a right is slightly easier and has some great views just before reaching the falls. Half way up a set of steps is the short connector trail with the Keown Falls observation deck where you'll get an above view of this thin waterfall. If it hasn't rained much, there may not be any waterfall at all. Behind the observation deck looking back and to the right, a narrow side trail leads up the small hill to an expansive view to the southeast.
Past here, the trail passes behind the falls within an alcove in the rock face. Watch for wet rocks here. Continuing on past another unnamed waterfall, the trail eventually reconnects with itself near the trailhead.
For downhill first, begin at the Johns Mountain Overlook trailhead. Take either the trail leading directly away from the parking entrance or the trail opposite the overlook platform. This trail quickly turns right whereas left just leads down the road about 100 feet. This is the lone unmarked intersection and a wrong turn is just a minor inconvenience. This trailhead does not have a restroom.
If you go straight along the ridge away from the parking entrance, you'll immediately pass a communication tower that currently has quite a bit of graffiti. Sections of the Johns Mountain Loop pass through small boulder fields with much larger boulders lining the path in several places. The other half of the loop has a short side trail to another good view.