I just spent about a week in the Denver Colorado area and hiked my freaking face off. I probably only saw 0.000001% of the trails there and everything I saw was breathtaking. The variety of hikes is wild too - from deserts to mountaintops. The cool part about Denver was it was central enough to hike all over. I drove anywhere from one to two hours for the hikes I did, but the vast majority of those drives were so scenic they didn't feel like long drives at all. Here's what I saw, but there are soooo many options
#1
(you need an account to see links)
#2
(you need an account to see links) (this was my favorite of the entire trip)
#3
(you need an account to see links) (a lot of people say they see big horn sheep on this one. I did not, but I did see a rattlesnake)
#4
(you need an account to see links) - this is a long drive up a beautiful mountain with a short hike at the very top. You finish at 14,000ft in elevation - literally above the clouds. It was majestic.
#5
(you need an account to see links) This was is in Rocky Mountain National Park. An awesome waterfall trail. I saw 3-4 waterfalls while I was hiking.
If you couldn't tell from my links, I can't recommend the app AllTrails enough. I even use it at home now to find trails nearby that I'd never know existed. Have fun! update us when you pick a place!