Bull Basin Loop

The Bull Basin Loop is a 37.4-mile route located within Tonto National Forest northeast of Phoenix, Arizona. This moderately strenuous route features 7,861 feet of overall elevation gain. The terrain includes singletrack, double track, and dirt road paths, which can range from sandy and smooth to rocky and uneven. This loop is recommended as a 3-day backpacking trip, showcasing lush meadows and rugged mountain vistas.

Your hike begins at the Sunflower Trailhead, where you’ll head north on the Arizona National Scenic Trail (AZT), traversing quintessential Arizona scenery with sweeping views of the surrounding mountains amid beautiful desert flora. The area is particularly colorful in the spring, thanks to the presence of wildflowers.

When the AZT connects to Edwards Park Trail, you’ll begin your loop around Bull Mountain and Bull Basin.

ROUTE DIRECTIONS

From Service Road 22, travel for 2 miles and then take a connector trail to the Arizona National Scenic Trail (AZT). Continue following the AZT past the Boulder Pools, then turn left onto Edwards Park, and right onto Sycamore Trail #68. Follow Denton Trail #69 to Big Pine Flat, then reconnect to the AZT and head north. When you reach the junction where you turned for Edwards Park, retrace your steps back to the start.

FLORA AND FAUNA

Lower elevations feature desert flora such as saguaro cacti and chaparral, while higher altitudes support pinyon pines, junipers, and mixed conifer forests. The area is rich in wildlife, including mule deer, javelinas, black bears, and a variety of birds. Reptiles such as rattlesnakes and Gila monsters are also common, alongside a colorful assortment of wildflowers that bloom in the spring.

TERRAIN

The loop includes sections of steep grades that can be challenging, particularly on the ascents and descents in and out of the canyons and valleys. The trails are well-maintained but can be rocky and rugged in places.

PERMITS AND CAMPING

No specific permits are required for day hiking, and dispersed camping is allowed throughout Tonto National Forest. Always make sure to double-check rules and regulations for the specific area you plan on visiting before setting out.

PARKING AND ACCESSIBILITY

The Sunflower Trailhead provides ample parking and is accessible via a well-maintained forest service road, making it a convenient starting point for this loop. The road conditions are generally good, but it's advisable to check local conditions, especially after heavy rains or snow.