There are
450 mi
from Cranston, RI to Tonawanda, NY
That's the driving distance. It would take 8 hours 50 mins to go from Cranston, Rhode Island to Tonawanda, New York.
The flight distance (direct flight from Cranston, RI to Tonawanda, NY) is 387.46 mi.
450 mi = 724.49 kms