Miles between Thornton, CO and Lake Forest Park, WA

There are
1,303 mi
from Thornton, CO to Lake Forest Park, WA

That's the driving distance. It would take 22 hours 41 mins to go from Thornton, Colorado to Lake Forest Park, Washington.

The flight distance (direct flight from Thornton, CO to Lake Forest Park, WA) is 1,017.21 mi.

1,303 mi = 1.61 kms