From here, the trail reaches a junction with a portion of the Akers Mill Trail and ducks under the tangle of freeways which includes I-285, only for it to emerge at the designated Bob Callan Trail trailhead. At 1.5 miles, the trail exits park land – there is a sign to let you know this. Signs of urban life begin to creep back through, particularly the apartment buildings that can be viewed from the trail.

At about 1 mile in, the terrain changes from relatively flat to hillier as it slopes up to meet I-285.

Boardwalks and bridges break up the monotony and are great spots to pause and take in the tranquil sights. After you cross under I-75, the path turns left and leaves the river, now following Rottenwood Creek instead. The trail starts its journey on a wide, porous concrete path paralleling the Hooch, as the river is fondly known. The trail begins at the Palisades Trailhead of the Chattahoochee River National Recreation Area at Paces Mills. The trail is a natural escape from a busy suburban lifestyle and is popular with everyone from moms pushing strollers to eager morning cyclists and older folks taking afternoon strolls. The portion of the trail on national park land is known as the Rottenwood Creek Trail, while the more urban sections of the trail within Cobb County are called the Bob Callan Trail. The Rottenwood Creek Trail is a developing trail system, comprised of a three-mile paved trail that runs along the Chattahoochee River and Rottenwood Creek in Cobb County, and a shorter 0.8-mile trail near Kennesaw State's Marietta campus.

Rottenwood creek atl