Going to head north soon to check-out Rayhouse Road and Western Mine Road.
THERE WILL BE DIRT!
Western Mine is a fun road. Not very long, but you are either ascending or descending the whole way. At the top it connects with Ida Clayton, which is paved, but fun to ride. If you are coming from Santa Rosa, take Franz Valley Rd to get there.
After Western Mine, you can go over to Middletown and head north on Big Canyon Rd. Dirt for about 5-6 miles, then paved, but fun to ride. Perini Rd off Big Canyon has some dirt and nice vistas. Siegler Springs Rd, to the north, becomes dirt also. Other than Western Mine, hese are all fairly flat and populated to varying degrees.