Miles between Boulder, CO and Hillsboro, OR

There are
1,251 mi
from Boulder, CO to Hillsboro, OR

That's the driving distance. It would take 21 hours 49 mins to go from Boulder, Colorado to Hillsboro, Oregon.

The flight distance (direct flight from Boulder, CO to Hillsboro, OR) is 973.32 mi.

1,251 mi = 1.61 kms