This driving loop takes about 6-8 hours to complete. Most visitors to Cathedral Valley drive the 57.6 mile (92.7 km) loop clockwise, beginning on the Hartnet Road located 11.7 miles (18.8 km) east of the visitor center on Highway 24 and continuing on that for 27.8 miles (44.7 km) to Hartnet Junction. Turn right (north) onto Cathedral Road and driving 29.9 miles (48.0 km) back to Highway 24 will complete the loop. There are many side trips and hiking opportunities along the way.