There are
2,401 mi
from Antioch, CA to Niceville, FL
That's the driving distance. It would take 1 day 19 hours to go from Antioch, California to Niceville, Florida.
The flight distance (direct flight from Antioch, CA to Niceville, FL) is 2,069.03 mi.
2,401 mi = 3,863.64 kms