From Flemington:  Take Route 202/31 South to Ringoes.  The church building will be on your left, on the north bound side.  You will have to pass the church and through the next light to take the jug handle to head back north.  The church will then be on your right.  The entrance to the parking lot will come up on you quickly.  

From Pennington:  Take Route 31 North to where 202 joins in at Ringoes.  Continue North on 202/31 through two lights.  Calvary OPC is located on the right side of 202 just after the second light.

From Princeton: Take Elm road which turns into Great road north.  Turn Left on CR 518.  Follow CR 518 until it intersects with Rt 31 North.  From here, follow directions from Pennington above.