There are
930 mi
from Cheyenne, WY to Oswego, IL
That's the driving distance. It would take 16 hours 21 mins to go from Cheyenne, Wyoming to Oswego, Illinois.
The flight distance (direct flight from Cheyenne, WY to Oswego, IL) is 852.90 mi.
930 mi = 1,497.17 kms