There are
1,036 mi
from Wheaton, IL to Gillette, WY
That's the driving distance. It would take 17 hours 59 mins to go from Wheaton, Illinois to Gillette, Wyoming.
The flight distance (direct flight from Wheaton, IL to Gillette, WY) is 891.93 mi.
1,036 mi = 1,666.73 kms