Miles between Longmont, CO and Fontana, CA

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

That's the driving distance. It would take 17 hours 29 mins to go from Longmont, Colorado to Fontana, California.

The flight distance (direct flight from Longmont, CO to Fontana, CA) is 797.44 mi.

996 mi = 1,603.10 kms