There are
1,990 mi
from Pasadena, CA to Romeoville, IL
That's the driving distance. It would take 1 day 10 hours to go from Pasadena, California to Romeoville, Illinois.
The flight distance (direct flight from Pasadena, CA to Romeoville, IL) is 1,708.64 mi.
1,990 mi = 1.61 kms