To get to the RV dump station, take Highway 101 South through the city of Gilroy. Then, continue on Highway 25 South and pass through the town of Hollister. Keep going for about 30 miles until you reach Highway 146. Turn right onto Highway 146. It's important to note that there is no road connecting the East and West entrances of Pinnacles National Park. If you need to travel between the entrances, the shortest route is through the town of King City on Highway 101.