There are
647 mi
from Warwick, RI to Amherst, OH
That's the driving distance. It would take 12 hours 37 mins to go from Warwick, Rhode Island to Amherst, Ohio.
The flight distance (direct flight from Warwick, RI to Amherst, OH) is 558.80 mi.
647 mi = 1,042.03 kms