Miles between Longmont, CO and Seattle, WA

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

That's the driving distance. It would take 22 hours 10 mins to go from Longmont, Colorado to Seattle, Washington.

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

1,279 mi = 1.61 kms