There are
1,329 mi
from Boynton Beach, FL to St Charles, IL
That's the driving distance. It would take 1 day 1 hour to go from Boynton Beach, Florida to St Charles, Illinois.
The flight distance (direct flight from Boynton Beach, FL to St Charles, IL) is 1,161.81 mi.
1,329 mi = 1.61 kms