Combination of paved bike path and single track. Flat but rooty and fast.
Trail head found on Callowhill Road in Perkasie - Route 313 N to 5th Street, left onto Callowhill Rd. Down on the left about 1/2 mile. Small parking lot. The trail runs between the paved path and stream.
http://www.singletracks.com/item.php?c=1&i=8710