Approximate miles from   Direction
Start  Pt. above    
0.0    0.0          NW on San Carlos Dr
0.2    0.2          Left on Contra Costa Canal Trail
0.7    0.5          Left on Iron Horse Trail
2.8    2.1          Cross Intersection at Newell Ave
3.9    1.1          Follow "Bike Route" and "Iron Horse Trail" signs
5.4    1.5          Left on Livorna Rd
6.8    1.4          Right on Miranda Ave
8.1    1.3          Left on Stone Valley Rd
10.2   2.1          Right on Green Valley Rd.
10.9   0.7          Left on Diablo Rd.
12.4   1.5          Left on Mt Diablo Scenic Blvd (becomes South Gate Rd)
19.4   7.0          Junction Ranger Station, Lunch,
19.4                Optional 9 mile round trip to summit
19.4                Continue down North Gate Rd
26.5   7.1          Right on Oak Grove Rd
26.6   0.1          Left on Walnut Ave
27.6   1.0          Left on Las Lomas Way
27.9   0.3          Right on San Carlos Dr
29.3   1.4          Finish