Currently I have a few rides listed for the Washington area on my website and will be adding more next year. A couple of the epics listed, with photos, GPS and maps, include:
Angel’s Staircase: Twisp, WA (http://www.bikepirate.com/x-country-trails/angels-staircase/)
Cutthroat Pass: Mazama, WA (http://www.bikepirate.com/x-country-trails/cutthroat-pass/)
Hope it helps you a little bit.
Good luck,
bikepirate