Originally Posted by Keystoner
I live in the area. Depending on which campground you're at...you can take Route 16 to Route 75 which will avoid all the traffic lights in and out of Chambersburg to the Ft. Loudon exchange.
I also use Route 30 west to Route 997 (Black Gap road) past Letterkenny Army Depot all the way to the Blue Mountain Exchange of the turnpike. From the center of Gettysburg, this is 39 miles and about 13 miles East of the Ft Loudon Exchange. This also keeps you out of Chambersburg and is similar time and mileage as 30 to 75.
Yep, these routes are good although 16 takes you pretty far south if going to the Tpike but going through Chambersburg on 30 really isn't terrible either.
Regardless... Do not go farther west on route 30 than Ft. Louden!