The NCAR Loop in Boulder is a lovely 3.4-mile 700ft elevation gain moderate hike with beautiful views of the Boulder mountains and the Flatirons. If you are looking for a shorter hike that features great Boulder views, this is the hike for you.
The Anne U. White Trail is a lovely 3.3-mile out-and-back trail located in North Boulder. It is a refreshing hike with a good amount of shade. The best time to visit the trail to enjoy lush green surroundings and a running stream is in spring to early summer.
This 2.3-mile easy hike at Heil Valley Ranch alternately passes through sunny areas and ponderosa pine forest. It is a good option for a quick hike.
The Lichen Loop at Heil Valley Ranch is an easy and pleasant 1.4-mile loop that passes through a couple meadows and ponderosa pine forest. It is also family-friendly, hikers-only, and features interesting plaques describing nature and history on the trail.