Miles between Longmont, CO and Ontario, CA

There are
1,006 mi
from Longmont, CO to Ontario, CA

That's the driving distance. It would take 17 hours 41 mins to go from Longmont, Colorado to Ontario, California.

The flight distance (direct flight from Longmont, CO to Ontario, CA) is 808.69 mi.

1,006 mi = 1.61 kms