Miles between Modesto, CA and Boulder, CO

There are
1,230 mi
from Modesto, CA to Boulder, CO

That's the driving distance. It would take 21 hours 7 mins to go from Modesto, California to Boulder, Colorado.

The flight distance (direct flight from Modesto, CA to Boulder, CO) is 861.04 mi.

1,230 mi = 1.61 kms