Back when I used to live in WA I drove some trails to the south of Sequim. There is a road up to Hurricane Ridge and then a trail that leads east (Obstruction Point RD) from there along the ridge that's got some unbelievable views. Not a technical trail but a great little drive. It finally comes back down (Deer Park Road) to the north near Sequim.
The stretch between Deer Park campground and Obstruction Peak used to be a pretty rough trail in areas. It's been years since I drove it however. It may be improved.
I found a video of Obstruction Point RD on Youtube. If you're afraid of heights skip from about 4:50 to 6:30....