You just spent your time on the coast, so I suggest driving through OR. There's lots I like in OR - and this is the best time of year to see the western part of the state - should be sunny instead of rainy. Lots of the waterfalls are really neat in the Portland area - down to near Salem. I had a great time around Salem - but if I were you and had never been through the high desert part of OR, I suggest you drive through the mountains - and stop in Sisters - there is a city park you can stay in (was $10 a night, no hook-ups, but they have water and a dump station) and you can walk all through town from the city park. Make sure if you go to Sisters that you check out the Habitat for Humanity second hand store. It's the best store of it's type I've ever been in. Getting to Sisters means traveling over the mountains - Sisters is high desert - so nice and cool at night, never needed air there at night no matter the month I've been there. There are a couple rv parks there also - I stayed at the city park, then in a friends driveway. If you want to hike you can do so in the Three Sisters Wilderness area - or go to the Metolius River - I love the Wizard Falls Fish Hatchery - it's along the Metolius -
http://www.oregon.com/hiking/metolius.cfm - I never did the hike the way they describe it - always drove to the Fish Hatchery and hiked from there and back.
I know you're from Utah - but have you and the dogs ever gone to the Great Salt Lake? That was so much fun when I took my dogs there - after they had played in lakes and the ocean, that "salt" beach confused them. (Then the salt stuck to them for a week confused them and frustrated me - but was well worth it.
Just some ideas- lots of beautiful areas of OR - just trying to suggest one you might not have gone to.
Beth
“Dare to live the life you have dreamed for yourself. Go forward and make your dreams come true.” ~ Ralph Waldo Emerson ~
"He who treasures the small things in life has found the path to true happiness"