There are
1,947 mi
from Yakima, WA to Mt Prospect, IL
That's the driving distance. It would take 1 day 9 hours to go from Yakima, Washington to Mt Prospect, Illinois.
The flight distance (direct flight from Yakima, WA to Mt Prospect, IL) is 1,627.65 mi.
1,947 mi = 1.61 kms