Click the "View Larger Map" at the bottom left corner to see map in full screen.  I have marked key locations so that you will have an idea where everything is at.

Travel Times:

From Portland to Multnoma Falls                                        1/2 hr

From Portland to Cannon Beach                                            2hrs

From Portland to Mt St Helens, Wa                                        2 hrs

From Portland to Mt St Helens to Cannon Beach               5hrs

From Mt St Helens to Cannon Beach                                     3hrs

From Cannon Beach to Mt St Helens (round trip)               6hrs

All Times are estimates of straight drive times, due to the nature of site seeing you may add hours to total... but at least you have a idea of how long it might take.