Miles between Upland, CA and Longmont, CO

There are
1,004 mi
from Upland, CA to Longmont, CO

That's the driving distance. It would take 17 hours 42 mins to go from Upland, California to Longmont, Colorado.

The flight distance (direct flight from Upland, CA to Longmont, CO) is 807.19 mi.

1,004 mi = 1.61 kms