Hwy 101 on east side, Bell Road exit, drive east to 104th street and pull in the dirt parking lot. Easy!
Shoot fast, within 90 seconds of the sun appearing it gets too high and too bright! First week of March is the time to be there. The cholla cacti look best backlit at sunrise.
Taken March 2011 at the foot of the McDowell Mountains. The iPhone app "Photographer's Ephemeris" showed me exactly where the sun would rise, and I waited 3 months for it to get to this location. Six-image HDR merge, no filters. Sun Rays from f/14 aperture and long exposures.