Approximate miles from   Direction
Start  Pt. above
0.0    0.0          West on D St.
0.1    0.1          Right on 6th St.
0.5    0.4          Left on Western Ave.
1.7    1.2          Right on Chapman Ln.
3.0    1.3          Left on Eastman Ln.
4.7    1.7          Left on Middle Two Rock Rd.
5.1    0.4          Right on Eucalyptus Rd.
6.0    0.9          Straight on Skillman Ln.
6.2    0.2          Left on Liberty Rd.
8.2    2.0          Left on Pepper Rd.
8.4    0.2          Right on Jewett Rd.
9.4    1.0          Left on Stony Point Rd.
9.6    0.2          Right on Railroad Ave.
12.6   3.0          Left on Petaluma Hill Rd.
16.1   3.5          Right on Crane Canyon Rd.
18.0   1.9          Straight on Grange Rd.
19.8   1.8          Right on Bennett Valley Rd.
25.2   5.4          Right on Warm Springs Rd.
27.6   2.4          Right on Arnold Dr.
27.8   0.2          Glen Ellen - Lunch
27.8                After Lunch, go back on Arnold Dr.
28.0   0.2          Left on Warm Springs Rd.
29.2   1.2          Left on Sonoma Mountain Rd. (See below for alternate)
34.6   5.4          Left on Pressley Rd.
37.5   2.9          Straight on Roberts Rd.
38.8   1.3          Left on Petaluma Hill Rd.
39.8   1.0          Right on Railroad Ave.
42.8   3.0          Left on Stony Point Rd.
43.0   0.2          Right on Jewett Rd.
44.0   1.0          Straight on Center Rd.
44.5   0.5          Right on Liberty Rd.
46.1   1.6          Left on Skillman Ln.
47.1   1.0          Right on Thompson Ln.
47.6   0.5          Left on Magnolia Ave.
49.5   1.9          Right on Keokuk St.
50.2   0.7          Right on Union St.
50.3   0.1          Left on Howard St.
50.6   0.3          Straight on 6th St.
50.9   0.3          Left on D St.
51.0   0.1          Finish - Walnut Park

Alternate return - less climbing, more miles.

29.2   1.2          Right to stay on Warm Springs Rd.
30.4   1.2          Left on Bennett Valley Rd.
35.1   4.7          Left on Sonoma Mountain Rd.
37.3   2.2          Right on Pressley Rd. (rejoining above +2.7 miles)