Green Mountain West Trail is easy-moderate level hike in Boulder Open Space. I went in March, and since there was little snow, it was easy to navigate and not very muddy. It was not very crowded when I went, but given its location, it's likely a popular trail.
The drive from downtown Boulder was about 30 minutes, and very easy to find. We passed several trail-heads on the way, which offered some limited parking. For this spot, we parked along the side of the road with no trouble. The trail is short, about 2.7 miles long, and takes you up to a peak with a view you don't want to miss.
Unfortunately, we did end up missing the views. When we went, it was a very foggy day (which doesn't happen often in Colorado), and when we reached the peak, we couldn't see very far. We know this is a great view spot though, because at top of the large boulder, a platform shows you where to look for the mountain peaks. Although we missed out on the view, the fog made for a great eerie hike.
Although the trail has a great ending view, at parts it doesn't feel like you're really out in the forest. The fog hide many of the distance sights, but at one point we did come close to what looked like a house, and other times we walked near a dirt road. Once you get further along, the trail becomes more challenging and you feel a little more like you're far from society.
There were several options to split off from the trail, and had the weather and fog been nicer, I would have loved to explore more! Overall, it was a fun and quick hike! Hopefully at some point I will get to go back and see those peaks...