From the Philadelphia Area:

Take the Northeast Ext. of the PA Turnpike toward Allentown. Get off at the Lehigh Valley/Route 22 exit. Take Route 22 East. Get off at the Schoenersville Road exit. Make a left at the end of the ramp and go 1.1 miles on Schoenersville Road. The fields and parking will be on the left.

OR

Route 309 North through Montgomeryville, Quakertown and Coopersburg. Look for signs for Route 378 North. (Route 378 will bear off to the right just after Coopersburg). Follow 378 North into Bethlehem by going up and over South Mountain. Continue on 378 North over the Hill-to-Hill Bridge in Bethlehem. Take the exit for 8th Avenue North which will make you bear to the right at the end of the ramp. Immediately before the 3rd light (Schoenersville Road), there will be a small right turn lane (at the WaWa convenience store) - take this and the fields and parking will be directly across the street.