Mount Moosilauke has a number of trails to the summit, and I choose the Glencliff and Beaver Brook trails for an out and back run over the summit. Glencliff has the greatest amount of vertical climb, and Beaver Brook is special. The posted mileage is about 15.5 miles with 6400' of vertical. The vast majority of the trail mileage is technical. Glencliff is typical NE terrain, but Beaver Brook has a very long and steep technical section which can be clearly seen on the GPS track. It is also incredibly scenic, with the challenging section running alongside Beaver Brook Falls. The views from the barren summit are outstanding on a clear day. I started at the Glencliff trailhead, and turned around at route 112. My time was 3:16:23.