Truly taking the "outer loop" of Phil's World, by continually turning left, catches this less-traveled trail which adds a couple more miles.
From Phil's World - Main Loop, a rough start over technical rock and eroded arroyo bottom yields to more typical singletrack for the area. The trail catches interesting threads through trees and open runs with an odd mix of flowing singletrack and rocky steps.
Toward the end enjoy a fast section rolling off to the roadway, crossing east of Phil's World road crossing at the main trailhead and meeting up with Trust Loop. A right takes it back to the parking lot; a left kisses the parking lot goodbye and keeps the adventure rolling.