Past the second junction there are at least eight more sites before the trail climbs steeply to the upper trail head. The third and fourth ruins sites are visible at the same time in adjacent alcoves. These two are about 2 miles up the trail just past the connecting trail East Rock Creek Junction.
The 10th small ruins site along the south end of the Sand Canyon Trail is located close to the 9th in the same side canyon.
It took me about 2:00 hours to get to the point, about 3.3 miles, where the trail gets steep ascending to the north trail head and about 1:30 to return to the trail head for a total of 3:30 hours. I skipped past the Castle Rock Pueblo and the first two sites that are also part of the old East Rock Creek Loop Trail , but if you are a first time visitor here you certainly want to stop for these also. (In 2011 most of these sites now have publicized names.)