Miles between Longmont, CO and Antioch, CA

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

That's the driving distance. It would take 20 hours 46 mins to go from Longmont, Colorado to Antioch, California.

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

1,203 mi = 1.61 kms