The farthest you can get from a road in the San Gabriels is 2.7 miles

Dima Kogan found the spot near Ross Mountain and Iron Mountain using OpenStreetMap data and a Voronoi diagram, then hiked out and left a register.

pole of inaccessibility — Photo by BLM California, public domain (Wikimedia Commons)

Dima Kogan hiked in the San Gabriel Mountains, and a friend wondered which point in the range sits farthest from any road or trail. Kogan went home and computed it, and his notes on the poles of inaccessibility above Los Angeles put the answer at 4,343 meters, or about 2…