There are
2,881 mi
from Warwick, RI to Hermiston, OR
That's the driving distance. It would take 2 days 3 hours to go from Warwick, Rhode Island to Hermiston, Oregon.
The flight distance (direct flight from Warwick, RI to Hermiston, OR) is 2,369.57 mi.
2,881 mi = 4,637.26 kms