I have been wanting to try hiking Mount Baldy (Mount San Antonio) via Bighorn Ridge for some time. We have determined 2 routes that seem feasible, shown in green (via Heaton Flats) and red (via Cow Canyon) below. I plan to give it a try sometime this fall/winter.

Mount Baldy via Bighorn Ridge - Google Earth KMZ File

Mount Baldy via Bighorn Ridge - GPX Format

Proposed Route: Click for Full Sized Map

 

Topo Map showing more possilbe routes. Heaton Flats in Blue, Cow Canyon in Red:

Click for Full Sized Map

Elevation Profile via Heaton Flats:

Elevation Profile via Cow Canyon: