There are
2,559 mi
from Escondido, CA to Niagara Falls, NY
That's the driving distance. It would take 1 day 21 hours to go from Escondido, California to Niagara Falls, New York.
The flight distance (direct flight from Escondido, CA to Niagara Falls, NY) is 2,159.16 mi.
2,559 mi = 3.22 kms