Miles between Antioch, CA and Simi Valley, CA

There are
349 mi
from Antioch, CA to Simi Valley, CA

That's the driving distance. It would take 6 hours 37 mins to go from Antioch, California to Simi Valley, California.

The flight distance (direct flight from Antioch, CA to Simi Valley, CA) is 308.35 mi.

349 mi = 561.00 kms