There are
2,639 mi
from Concord, CA to Tonawanda, NY
That's the driving distance. It would take 1 day 22 hours to go from Concord, California to Tonawanda, New York.
The flight distance (direct flight from Concord, CA to Tonawanda, NY) is 2,269.94 mi.
2,639 mi = 3.22 kms