There are
992 mi
from Oshkosh, WI to Denison, TX
That's the driving distance. It would take 18 hours 31 mins to go from Oshkosh, Wisconsin to Denison, Texas.
The flight distance (direct flight from Oshkosh, WI to Denison, TX) is 828.65 mi.
992 mi = 1,596.06 kms