I think my favorite ride in Colorado is to take I-70 to Idaho Springs, take hwy 6 to 119 North....watch out for all the congestion at Black Hawk due to the casinos....then 72 to 7 to Estes Park....then 34 through Rocky Mountain National Park down to Grand Lake, hwy 40 to I-70 and back the Breckenridge. That would be a very full day.....but so many twisties....so many sites!!!!!!!!!!!