At approximately 4.5 miles and 1500′ of elevation gain and loss from the Upper Green Mountain Trailhead the Green Mountain – Brush Corral – Brush Corral Shortcut loop is both beautiful (especially on the Brush Corral side of the loop – beautiful green ferns and trees right now) and quite a good workout – maybe if you are training for the Grand Canyon a loop at the top of the mountain to start the day, a nice break in Summerhaven and then this loop on the way down the mountain for a bit more vertical…
If you want just a bit longer hike the Maverick Spring Trail is an obvious out-and-back extension to this loop that adds approximately 1.6 miles, 500′ of elevation gain and loss and – this time of year – a beautifully green destination.