Miles between Thornton, CO and Marysville, WA

There are
1,321 mi
from Thornton, CO to Marysville, WA

That's the driving distance. It would take 22 hours 58 mins to go from Thornton, Colorado to Marysville, Washington.

The flight distance (direct flight from Thornton, CO to Marysville, WA) is 1,022.04 mi.

1,321 mi = 1.61 kms