There are
2,146 mi
from Oshkosh, WI to Clearlake, CA
That's the driving distance. It would take 1 day 14 hours to go from Oshkosh, Wisconsin to Clearlake, California.
The flight distance (direct flight from Oshkosh, WI to Clearlake, CA) is 1,785.08 mi.
2,146 mi = 3,453.64 kms