There are
2,126 mi
from Redwood City, CA to Oswego, IL
That's the driving distance. It would take 1 day 12 hours to go from Redwood City, California to Oswego, Illinois.
The flight distance (direct flight from Redwood City, CA to Oswego, IL) is 1,815.53 mi.
2,126 mi = 3,420.86 kms