Hiking, site seeing, shopping, food and drinks! 45 minute drive from Denver. For hiking I recommend any trail on Chautauqua or Mt. Sanitas!
Hiking and beautiful site seeing! 1 hour 40 minutes from Denver.
Hiking, walking around town, yummy beer, river tubing! 30 minutes from Denver. For a short hike that gets you beautiful views: Olivine Trail Loop on South Table Top Mountain
The best Korean Fried chicken you will ever eat. Multiple locations.
Watch a baseball game!
A must see even just to walk around.