best way to get to Numidia Raceway from Baltimore

[cal]

Hello All.
Looking for the best rt to go from Baltimore area, to Numidia Dragway in Numidia PA.
Driving a Renegade, pulling a stacker.
Want to avoid the hills as much as possible.
Not to familiar with the area.
Tried to map quest it, didn't look to good going that way.
Thanks in advance
Cal