Miles between Thornton, CO and Boise, ID

There are
809 mi
from Thornton, CO to Boise, ID

That's the driving distance. It would take 13 hours 30 mins to go from Thornton, Colorado to Boise, Idaho.

The flight distance (direct flight from Thornton, CO to Boise, ID) is 635.17 mi.

809 mi = 1,301.18 kms