From George Washington Bridge:

Take Route 80 West to Squirrel Wood Road (Exit 56). Make a left at Squirrel Wood Road and go straight about a mile. You will pass a gas station on your left. Go through the light and continue to 2nd left (Weasel Drift Road). Entrance to the park is approximately 1/2 mile on the left. (Sign says Garret Mountain Reservation). Entrance to the stable is on the right.

From the West:

Take Route 80 East to Squirrel Wood Road (Exit 56). Make a right on to Squirrel Wood Road and proceed as above.

From Lincoln Tunnel:

Take Route 3 West. Bear right on Valley Road. Be sure to stay right. Do not go on Route 46 which is to the left. Make a sharp left on Upper Mountain Road and go up hill to first right (entrance to Garret Mountain Reservation). Entrance to the stable is on the right.