21 - Highway 56 bike path. 24 miles, 2040 ft el, 85 ft/mi

0.0 Start Del Mar Heights Plaza
0.1 L El Camino Real
1.7 R 56 bike trail (loops under El Camino)
10.5 L Rancho Penasquitos
10.7 = Carmel Mountain
11.7 R Black Mountain
13.3 L Carmel Valley
14.4 R Camino del Sur
16.4 L San Dieguito
22.3 L Old El Camino Real
23.1 R Derby Downs
23.2 L El Camino Real
24.2 L Del Mar Heights Plaza