There are
1,964 mi
from Oswego, IL to Walnut, CA
That's the driving distance. It would take 1 day 10 hours to go from Oswego, Illinois to Walnut, California.
The flight distance (direct flight from Oswego, IL to Walnut, CA) is 1,685.26 mi.
1,964 mi = 3,160.81 kms