Miles between Boulder, CO and San Anselmo, CA

There are
1,243 mi
from Boulder, CO to San Anselmo, CA

That's the driving distance. It would take 21 hours 27 mins to go from Boulder, Colorado to San Anselmo, California.

The flight distance (direct flight from Boulder, CO to San Anselmo, CA) is 937.63 mi.

1,243 mi = 1.61 kms