Do not run on vegetation or in solution pits, whether wet or dry. Follow the cairns across bare rock.
The iconic, and appropriately-named, Mountain Top Trail is the trail that will take you to the summit of Arabia Mountain. Parking at the south parking lot near the trailhead is limited, and additional parking is located at the nature center from which you can take the paved AMP Trail and boardwalk to reach the trailhead.
Once on the trail, you'll enjoy a gentle incline up to the peak. The trail is marked with rock cairns, and please be sure to stay on the marked path and tread lightly on the bare rock to avoid sensitive plants in the area. After about a half mile of gradual climbing, you'll reach the peak where you can stop to enjoy the views which are impressive for being so close to Atlanta!