There are
2,035 mi
from Oshkosh, WI to Lancaster, CA
That's the driving distance. It would take 1 day 12 hours to go from Oshkosh, Wisconsin to Lancaster, California.
The flight distance (direct flight from Oshkosh, WI to Lancaster, CA) is 1,696.90 mi.
2,035 mi = 3,274.91 kms