There are
1,937 mi
from Thornton, CO to Warwick, RI
That's the driving distance. It would take 1 day 11 hours to go from Thornton, Colorado to Warwick, Rhode Island.
The flight distance (direct flight from Thornton, CO to Warwick, RI) is 1,748.95 mi.
1,937 mi = 1.61 kms