There are
1,863 mi
from Dubuque, IA to Fullerton, CA
That's the driving distance. It would take 1 day 8 hours to go from Dubuque, Iowa to Fullerton, California.
The flight distance (direct flight from Dubuque, IA to Fullerton, CA) is 1,587.30 mi.
1,863 mi = 2,997.65 kms