There are several great hiking trails in Marietta, Ohio that form a great trail network. Click on the individual trail listings for more information.
Take 7th Street in Marietta OH, off Green Street (Rt.7), at the second light go right and then the second left near the McDonalds. You will cross the next street into the parking lot and drive past the Subway, keep going to the right of Tractor Supply and then take a right. You will see the parking area on your left in just a few feet.
http://www.tripleblaze.com/trail.php?c=3&i=3316