Since we finally have a dry weekend in Colorado, I spent most of the afternoon hiking in Chautauqua Park in Boulder.
The hike started at the Chautauqua trailhead and went along the Chautauqua trail and the Ski Jump trail to the Gregory Canyon trailhead, which is currently inaccessible to vehicles due to flood damage from last year. It then followed the Gregory Canyon trail to the Ranger trail. From the Ranger trail the path followed the E.M. Greenman trail to the Saddle Rock trail and followed that to the Amphitheater trail. The hike ended by walking along the Baseline trail back to the Chautauqua trailhead.
These trails are all open, but there is some damage along the Gregory Canyon trail as it follows a creek, and there is also a ladder on the Saddle Rock trail to get down a damaged section. There are a couple closed areas in the park, such as the Royal Arch trail.
This hike ended up being around 9 km and took around 4 hours at a fairly slow pace. There is an elevation gain of around 500 m and there are a lot of steep rocky areas along the Gregory Canyon and Saddle Rock trails, so this probably isn’t appropriate for small children or people with no hiking experience.
It’s a pretty nice hike on a hot day, since it’s mostly in wooded areas except for the areas near the Chautauqua trailhead. There are very nice views of Boulder along various points of the trail.
If you’re more ambitious, you can follow the Ranger trail to the top of Green Mountain and then loop back around on the Greenman trail to the Saddle Rock trail. This adds another 3 km to the path and I think around 300 m of elevation.