The scenic loop is 15 miles (24 km) round-trip. There are no short cuts. If you become unable to complete the entire 15-mile trip, turn around and return on the same road. Bicycling the road takes an average of 2 to 3 hours. The parking lot closes at 6 PM, so be sure to allow yourself enough time. Ride your bike opposite the flow of tram traffic. Start behind the Visitor Center and follow the straight West Road.