Miles between Boulder, CO and Rialto, CA

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

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

The flight distance (direct flight from Boulder, CO to Rialto, CA) is 781.03 mi.

983 mi = 1,582.58 kms