Miles between Hayward, CA and Boulder, CO

There are
1,253 mi
from Hayward, CA to Boulder, CO

That's the driving distance. It would take 21 hours 36 mins to go from Hayward, California to Boulder, Colorado.

The flight distance (direct flight from Hayward, CA to Boulder, CO) is 917.60 mi.

1,253 mi = 1.61 kms