Miles between Antioch, CA and Longmont, CO

There are
1,203 mi
from Antioch, CA to Longmont, CO

That's the driving distance. It would take 20 hours 45 mins to go from Antioch, California to Longmont, Colorado.

The flight distance (direct flight from Antioch, CA to Longmont, CO) is 906.81 mi.

1,203 mi = 1.61 kms