Green Mountain Loop is a 5.7 mile moderately trafficked loop trail located near Boulder, Colorado that features beautiful wild flowers and is rated as difficult. The trail is primarily used for hiking and trail running and is best used from March until November. Dogs are also able to use this trail but must be kept on the leash.
Head up Bluebell trail to Gregory Canyon trailhead (there is a fee to park here). From here, either way is fun, but clockwise is a little harder. Travel up Gregory Canyon to the cabin with outhouses. From there take the trail up the north ridge to the peak. Enjoy the views on a clear day and head down when ready. For an extra workout, go back on Bluebell, otherwise, head down the baseline trail to the trailhead.