Miles between Rialto, CA and Longmont, CO

There are
996 mi
from Rialto, CA to Longmont, CO

That's the driving distance. It would take 17 hours 32 mins to go from Rialto, California to Longmont, Colorado.

The flight distance (direct flight from Rialto, CA to Longmont, CO) is 793.84 mi.

996 mi = 1,603.32 kms