The Phoenix Sonoran Preserve is in far north Phoenix. There’s two units, South and North, separated by Sonoran Desert Drive and Cave Buttes Recreation Area. Despite its name, Cave Buttes is no longer open to the public. The “recreation area” is now used for flood control along Cave Creek. In the map below, Cave Creek runs up the middle of my loop, between Cliff Walk Trail and Esplanade Trail.
Directions: From northbound I-17, take exit 222 to Dove Valley Rd. Turn right. In 5.1 miles, turn left into the Apache Wash Trailhead. From the Loop 101, take exit 28 to Cave Creek Rd. Turn north. In 4.7 miles, turn left onto Sonoran Desert Dr. In 4.0 miles, turn right into the Apache Wash Trailhead.