There are
911 mi
from Oshkosh, WI to Havre De Grace, MD
That's the driving distance. It would take 17 hours 8 mins to go from Oshkosh, Wisconsin to Havre De Grace, Maryland.
The flight distance (direct flight from Oshkosh, WI to Havre De Grace, MD) is 711.09 mi.
911 mi = 1,465.53 kms