Denver (Colorado in general) is easy to navigate by car, especially if you're from Chicago... I miss the 75mph speed limits already. Getting to the hills can't be simpler, I-25 to I-70 west takes you right there straight out of Denver (depending on where around Denver you are of course).... bring oxygen. I was just out there last weekend snowboarding and needed a few days to acclimate coming from sea level. Next trip I'm bringing the bike, and an extra lung.