There are
2,157 mi
from Redwood City, CA to Mt Prospect, IL
That's the driving distance. It would take 1 day 13 hours to go from Redwood City, California to Mt Prospect, Illinois.
The flight distance (direct flight from Redwood City, CA to Mt Prospect, IL) is 1,835.96 mi.
2,157 mi = 3,471.28 kms