#4 Mt. Tam upper left; #2 Mix Canyon upper right;
#3 Bald Mountain bottom right; #5 Geysers Road bottom left;
#1 Mt. St. Helena center
The North Bay consists of Solano (Mix Canyon) Marin (Mt. Tam), Napa (Mt. St. Helena) and Sonoma Counties. (Bald Mountain, Geysers Road, Ida Clayton Road, Fort Ross Road, Pine Flat, Pine Mountain and Cavedale).
The top 5 in in reverse order:
NORTH BAY #5 BIKE CLIMB
GEYSERS ROAD (SONOMA COUNTY)
Cycling Geysers Road - Sonoma County’s second hardest road bike climb
Ride 4.1 miles gaining 1,841’ at 8.7% average grade.
This climb is a California Top 10 Most Scenic Bike Climb
MT. TAMALPAIS (MARIN COUNTY)
Cycling Mt. Tamalpais from Panoramic Highway North -- View from Mt. Tam’s West Peak
Most difficult bike climb in Marin County
Ride 6.6 miles gaining 2,378’ at 6.8% average grade
BALD MOUNTAIN (SONOMA COUNTY)
Cycling Bald Mountain - very challenging - 33 mm tires recommended.
Ride 4.1 miles to 2,733’ gaining 2,122’ at 9.5% average grade.
Steepest ¼ mile is near the top - 17%
MIX CANYON (SOLANO COUNTY)
Cycling Mix Canyon Road
Ride a mere four miles, but at a stout 10.5% average grade.
A windy, narrow road through a canyon with minimal distant views.
SAN FRANCISCO NORTH BAY MOST DIFFICULT BIKE CLIMB
MT. ST. HELENA (NAPA COUNTY)
Cycling Mt. St. Helena
Ride 11.5 miles gaining 3,815’ at 6% average grade.
This is another California Top 10 Most Scenic Bike Climb
By a long stretch, the Mt. St. Helena climb ranks #1 in the North Bay, with a Fiets Index of 7.23 (well beyond its closest competitors: Mix Canyon and Bald Mountain).