Petrified Forest National Park has one main road with an entrance station at either end. Driving time from one end of the park to the other is about 45-minutes without stops. Depending on your direction of travel, you may enter the park from the north or from the south.
If you are traveling west after your visit to Petrified Forest National Park, enter at the north end from Interstate-40, Exit 311. You will then drive through the park and exit out the southern end onto Highway 180, traveling 19 miles into Holbrook where you will again access Interstate-40.
If you are traveling east after your visit to Petrified Forest National Park, leave Interstate-40 at the first Holbrook exit and use Highway 180. The southern park entrance is off Highway 180, 19 miles from Holbrook. You will then drive through the park and exit out the northern end onto Interstate-40.
Navigating through the park is not a problem in a large RV, even when pulling a trailer. All but two of the points of interest have pull through parking areas. The only difficult spots are the Pintado Point and Agate Bridge parking areas. When other vehicles are present, turning around in an RV can be difficult.