Miles between Seattle, WA and St Helens, OR

There are
151 mi
from Seattle, WA to St Helens, OR

That's the driving distance. It would take 3 hours 12 mins to go from Seattle, Washington to St Helens, Oregon.

The flight distance (direct flight from Seattle, WA to St Helens, OR) is 122.86 mi.

151 mi = 243.33 kms