So I'm planning a trip around the USA because I fell for the "road trips are fun" meme and it's too late to back out. We'll be doing a rough circuit, starting in CNY.

I'm planning to hit the Black Hills, the obligatory Yellowstone, Salmon-Challis and Sawtooth, Mt. Rainier Park, Olympic Park, Six Rivers and Klamath, Redwood Park, Stanislaus Forest, Sierra Forest, Los Padres, the also obligatory Grand Canyon, and Rio Grande. Considering Nantahala if we have time. Any other beauties I'm unaware of? Preferably with plenty of trails