A half-mile down to Sipapu bridge, then 2.3 miles along the creek in White Canyon to reach Kachina Bridge.
From Kachina Bridge, it is another 3.0 miles up Armstrong Canyon to Owachomo Bridge. Unfortunately, there had been a flash flood in the canyon recently (within a week or so). About a mile up the canyon, the flood formed a debris dam that blocked the very small creek at a narrow cliffy section. It was too wide for me to jump across, and deeper than the length of my hiking pole. It was a cool day, and I had no interest in swimming. I didn't see a likely bypass route so I turned around and called it a day.