Note that Petrified Forest National Park is only open to the public for day use every day of the year except for Christmas Day (December 25). Park access is prohibited at night without a permit. Park hours are:

 • 7:00 AM to 7:00 PM MST (Summer)
 • 7:00 AM to 6:00 PM MST (Spring & Fall)
 • 8:00 AM to 5:OO PM MST (Winter)

Note: Unlike most western states, Arizona does not observe Daylight Savings Time, remaining on Mountain Standard Time year-round. However, many visitors arriving from the Navajo Reservation (which does observe daylight savings time) travel with their clocks set an hour off. It is probably a good idea to check a clock at a visitor center to make sure you don't accidentally get locked in at night.

By car

A car is the easiest way of getting around in the park, with the park road allowing visitors to travel through the park from end to end without backtracking. Eastbound travelers should enter at the south off Highway 180, and exit at the north onto Interstate 40. Westbound travelers should enter at the north at Exit 311 off Interstate 40, and exit at the south onto Highway 180.

By bicycle

Bicycles are permitted only on the established paved roadway and cannot be used on paved or dirt trails or off road at any time. In addition, if planning to see the park from a bicycle be aware of the potential for extreme heat, thunderstorms, or high winds and plan accordingly.