There are
798 mi
from Evanston, IL to Hays, KS
That's the driving distance. It would take 14 hours 29 mins to go from Evanston, Illinois to Hays, Kansas.
The flight distance (direct flight from Evanston, IL to Hays, KS) is 648.93 mi.
798 mi = 1,284.67 kms