Hey there! I came across your post as I was scrolling 8 pages deep in the 4th Gen posting. I'm happy to help. As a Washington resident and forum member, I was very unhappy to see that the Pacific Northwest forum page is rarely utilized, and if it is, it's usually Oregon residents. I stumbled across a post in the 4th Gen section last summer, and then someone on that post started a post in the 5th Gen section. That post subsequently became the central, running post for NW activities.... and it's not some post that just needs to be reserved for 4th Gen owners. Started originally 9/16/2014, it was last active yesterday. It's 41 pages long.
Check it out! You'll find a wealth of info and links. Tahuya has come up several times on this thread. I believe there's links, descriptions, pictures and videos (or links to pics/videos).
http://http://www.toyota-4runner.org/5th-gen-t4rs/177777-seattle-area-4runner-meet-up-anyone.html
Additionally, I'd like to recommend Capital State Forest Park, with an entrance off of HWY 8 at the Straddleline ORV Park. This beautiful Forest Park has extensive forest service roads that are easy to explore and super stock friendly. No concern for "pin stripping" (scratches from surrounding brush). Also, bring a mountain bike or some good hiking shoes as well if you'd like. There's dedicated trails for all sorts of activities (ATV/Motorcycle, mountain biking, hiking).
Capital Forest - Straddleline ORV Park
Lastly, one area I've been exploring a lot is the Clallam Bay/Neah Bay area. Down Eagle Crest Way, near the Clallam Bay Corrections Facility, there's a offshoot to some extensive forest service and logging roads. Travelling west, going down Eagle Crest, the entrance is clearly marked on the left hand side of the road (you'll see Discover Pass Required signage). I've had a chance to explore FS 1300 and 1400. Both are easy and stock friendly. FS 1400 does become a little "pin-stripey" towards the end of the line.
A little bit before that entrance, on the right hand side of Eagle Crest is a different entrance to another set of roads. These roads are more tight, less gravel coverage and closed in a bit more. Since my 4Runner sports the Natural White paint, lacking the shiny clear coat, I was more apt to give these roads a go. However, if you have nicer paint, I would advise that you avoid these UNLESS you scout the road, pause, get out of the car, and cut down or trim the brush (which wouldn't be too hard). This road was by far my favorite. The road goes immediately up, up, up slow and easy and really tests the 4WD of the vehicle. My Duratracs handled it well. However, when I had to slow down to maneuver through some rutted ground and brush, my 4HI and gearing took a moment to get the momentum going again with the V6. Honestly, this would have been a perfect spot to use my 4LO. Getting to the top offers amazing views. I literally drove up into a cloud. There's more offshoots along this road, but I had no time to explore them.
I hope this information helps and that you've got some additional direction on where to go!
