Maverick for sure on the Flagstaff/Page side. 1st class, well-designed, great pricing.
For folks coming in from St. George/Kanab direction, many like to use the 76 on Hwy 89 at Greenehaven just after crossing the Utah/Arizona border. Mainly for convenience, only a mile or two from the North Entrance and a time-saver vs driving another 8-10 miles to town.
Regular, Premium, Diesel, Block/Cubed Ice, Groceries and Air (not sure about water). For boaters, the fuel island closest to the store is equipped with extra long hoses to easily reach dual fuel tanks.
Summer Hours: 6 am - 9 pm