There are
2,474 mi
from Jacksonville Beach, FL to Simi Valley, CA
That's the driving distance. It would take 1 day 19 hours to go from Jacksonville Beach, Florida to Simi Valley, California.
The flight distance (direct flight from Jacksonville Beach, FL to Simi Valley, CA) is 2,188.95 mi.
2,474 mi = 3,980.94 kms