Cleveland, Ohio to Gettysburg, Pa.

Here's another way that will avoid most of the tolls, and I've taken our 40'MH this route several times. Take I-80 East into Pa to exit # 161; I-99 south to State college; US 322 east to Harrisburg Pa, then to get around Harrisburg take I-81 north; I-283 south; I-83 south and continue straight onto Pa Route 581; then take US 15 south to Gettysburg. There will be some traffic around Harrisburg but as long as you go thru after 9AM and before 3PM or after 6PM you'll be fine.