Take Fell St. west into Golden Gate Park onto JFK Drive. Fifty yards or so into the park take your first right on E. Conservatory Drive (before you get to the Botanical Gardens). Follow the road up about 100 yards, there will be a path leading up to the Horse Shoe Pits on your right before a light pole (a sign will be on the light pole - see picture below). You can park anywhere along this one way road.