From Marietta, just about anything East of 77 and south of 70, including 26, 260, 800, 255 536 (Ohio's Dragon), 556, and cross the river and just about anything in WV is awesome, including 16, 47, 74, 33, 18, 20, 14, 5. West of 77, hit 676, 550, 555, 370, 78, 669. If you make it all the way over to Hocking Hills, 56, Chapel Ridge Rd., Big Pine Rd., Thompson Ridge Rd., Jack Run, Buena Vista (most of the SRs are packed with tourists and I use them to get from one named road to another).