There are
1,303 mi
from Thornton, CO to Bainbridge Island, WA
That's the driving distance. It would take 23 hours 6 mins to go from Thornton, Colorado to Bainbridge Island, Washington.
The flight distance (direct flight from Thornton, CO to Bainbridge Island, WA) is 1,023.38 mi.
1,303 mi = 1.61 kms