true then go on a 10 hour drive south to Rocky mountain national park.. but these are summer trips, RMNP is closed during the winter. driving over trail ridge road when its open is a beautiful drive and if you have never driven higher than the tree line its a interesting experience.
Well, 2 ways to go about this imo.
1) Grand Canyon -> Zion + Cedar Breaks Ntl Monument -> (Bryce) -> Capitol Reef / Arches
Not sure that Bryce is appropriately accessible. You can cut out Capitol Reef / Arches and add in a day or two in Vegas if she's into that sort of thing. Even hit up Red Rock for an in-city diversion. Stay 2 days in maybe Williams, AZ for Grand Canyon, 3 days in Vegas with a day trip to Death Valley and 2-3 days in Cedar City for Zion, Cedar Breaks and Bryce.
2) Sequoia -> Kings Canyon -> Yosemite, + assorted Sierra points of interest, monuments and state parks
I'm not convinced you can appreciate Sequoia *that* much without seriously walking around a lot, but Kings is just plain interesting to drive through and will have lots of nice vistas and Yosemite is obvious.
Save money and just drive yourself up to the smoky mountain national park.
OK, so what are you looking for in a national park? They're all a bit different. MOST of the western parks are in the mountains...but not all. The NP's in Utah are deserty...Yellowstone is mountainous, but has the biggest diversity in animals...plus the geothermal features. Yosemite's biggest attractions are Half Dome and El Capitan, plus some big fucking trees. (not the biggest, but still impressive) Sequoia/King's Canyon has the "General Sherman" tree...the world's largest tree by volume. (There are taller trees...some of the coast redwoods are considerably taller, but they don't have the girth to go with them)
The national parks are diverse. Let us know what kinds of things you want to see. That makes the recommendations a bit easier.
