I started hiking at the pit toilet but the actual trailhead is a few hundred yards further. The hike is about 1.5 miles round trip down Badger Springs Wash to the junction with the Agua Fria River.
My total hike took about 1:00 hour for about 1.5 miles. I saw 3 other hikers on the trail during my hike. The other trail that is publicized for Agua Fria National Monument is the Pueblo la Plata ruins site accessed from the Bloody Basin Road at Exit 259.