From San Diego you'll ride on bike paths and residential streets on a steady climb into the mountains. Dry easterly winds predominate in the fall, blowing in from the central desert. At In-Ko-Pah Pass the route joins I-8 for a short distance. El Centro and Brawley are situated in the Imperial Valley, an area famous for its agricultural bounties. Stock up on food and water here; services are extremely limited on the next stretch of the route...