There are
870 mi
from Schenectady, NY to Belvidere, IL
That's the driving distance. It would take 16 hours 46 mins to go from Schenectady, New York to Belvidere, Illinois.
The flight distance (direct flight from Schenectady, NY to Belvidere, IL) is 758.75 mi.
870 mi = 1,400.14 kms