There are
1,852 mi
from Decatur, IL to Barstow, CA
That's the driving distance. It would take 1 day 8 hours to go from Decatur, Illinois to Barstow, California.
The flight distance (direct flight from Decatur, IL to Barstow, CA) is 1,571.46 mi.
1,852 mi = 1.61 kms