There are
1,006 mi
from Yonkers, NY to St Peters, MO
That's the driving distance. It would take 19 hours 1 min to go from Yonkers, New York to St Peters, Missouri.
The flight distance (direct flight from Yonkers, NY to St Peters, MO) is 897.09 mi.
1,006 mi = 1.61 kms