Miles between Boulder, CO and South San Francisco, CA

There are
1,252 mi
from Boulder, CO to South San Francisco, CA

That's the driving distance. It would take 21 hours 38 mins to go from Boulder, Colorado to South San Francisco, California.

The flight distance (direct flight from Boulder, CO to South San Francisco, CA) is 935.10 mi.

1,252 mi = 1.61 kms