Miles between Boulder, CO and Fontana, CA

There are
983 mi
from Boulder, CO to Fontana, CA

That's the driving distance. It would take 17 hours 15 mins to go from Boulder, Colorado to Fontana, California.

The flight distance (direct flight from Boulder, CO to Fontana, CA) is 784.64 mi.

983 mi = 1,581.19 kms