I'm based in Utah. Its just my wife and me. we have covered some of Colorado, Oregon coast and northern California, spent time in most of Utahs great canyon-land areas , I'm sure we will still find mo...
My pick would be Alberta (Banff and Jasper) but that's a long haul. It would be 2-3 days just to get there. What about Arizona? Love the Senoran Desert and the Sedona area.