Miles between Boulder, CO and Lewiston, ID

There are
1,075 mi
from Boulder, CO to Lewiston, ID

That's the driving distance. It would take 19 hours 20 mins to go from Boulder, Colorado to Lewiston, Idaho.

The flight distance (direct flight from Boulder, CO to Lewiston, ID) is 736.01 mi.

1,075 mi = 1.61 kms