What is the distance between allentown pa and camp hill pa?

78 miles taking this route:

1. Take I-78 WEST to I-81 SOUTH to HARRISBURG.
2. Take I-81 SOUTH to I-83 SOUTH to SOUTH HARRISBURG and YORK at EXIT 70.
3. Take I-83 SOUTH to PA-581 WEST to CAMP HILL and GETTYSBURG at EXIT 41 A.
4. Take PA-581 to Camp Hill.