Distance is about 9 miles one way, with 3,400feet of vertical; water available at Henniger Flats (3.8miles) and on top.
A nice winter day's trail run.
This winding road makes it's way up connected ridges from Altadena's edge of the Angeles National Forest. It has quite a history of course, being a tourist attraction for thousands of people to gain the views and leave the heat below.