Miles between Boulder, CO and Walnut, CA

There are
1,008 mi
from Boulder, CO to Walnut, CA

That's the driving distance. It would take 17 hours 46 mins to go from Boulder, Colorado to Walnut, California.

The flight distance (direct flight from Boulder, CO to Walnut, CA) is 807.70 mi.

1,008 mi = 1.61 kms