There are
1,908 mi
from Mt Prospect, IL to Barstow, CA
That's the driving distance. It would take 1 day 9 hours to go from Mt Prospect, Illinois to Barstow, California.
The flight distance (direct flight from Mt Prospect, IL to Barstow, CA) is 1,639.85 mi.
1,908 mi = 3,069.85 kms