There are
1,725 mi
from Cheyenne, WY to Dover, DE
That's the driving distance. It would take 1 day 7 hours to go from Cheyenne, Wyoming to Dover, Delaware.
The flight distance (direct flight from Cheyenne, WY to Dover, DE) is 1,545.91 mi.
1,725 mi = 2,775.77 kms