There are
1,838 mi
from Boone, IA to Fremont, CA
That's the driving distance. It would take 1 day 7 hours to go from Boone, Iowa to Fremont, California.
The flight distance (direct flight from Boone, IA to Fremont, CA) is 1,516.98 mi.
1,838 mi = 2,958.18 kms