[IZ] Evening Bike, 7/2

Dist: 16.9 miles
Time: 1:27
Avg: 11.7 MPH

Through the Presidio, across the bridge, 1/2 way up the headlands, down the other side, through the tunnel, across the bridge, and home along Crissy Field.

After the bridge and before the headland I was pretty wiped out, so I had one of those gel packets. After that, the headland was a breeze.