|From Interstate 15: Take the Rainbow Valley Blvd Exit and head East. There is a four-way stop at this road and Old Highway 395; do not turn there. Continue on this for another block until it dead-ends (at Rainbow Valley Blvd).
Stop there; look for cars both ways since they do not have to stop for you and since they are moving fast. When clear, turn left and go just a few hundred yards, following the road as it curves around. On your right there will be a small sign (probably no larger than two-feet square, so it's easy to miss) for the range and a narrow dirt path that turns into it between fenced areas.