There are
1,978 mi
from Dubuque, IA to Danville, CA
That's the driving distance. It would take 1 day 10 hours to go from Dubuque, Iowa to Danville, California.
The flight distance (direct flight from Dubuque, IA to Danville, CA) is 1,675.93 mi.
1,978 mi = 3,184.08 kms