There are
2,167 mi
from Sunnyvale, CA to Prospect Heights, IL
That's the driving distance. It would take 1 day 13 hours to go from Sunnyvale, California to Prospect Heights, Illinois.
The flight distance (direct flight from Sunnyvale, CA to Prospect Heights, IL) is 1,828.51 mi.
2,167 mi = 3.22 kms