Miles between Seattle, WA and Longmont, CO

There are
1,279 mi
from Seattle, WA to Longmont, CO

That's the driving distance. It would take 22 hours 7 mins to go from Seattle, Washington to Longmont, Colorado.

The flight distance (direct flight from Seattle, WA to Longmont, CO) is 996.87 mi.

1,279 mi = 1.61 kms