Mount Clay sits at 5,533 feet on the Presidential Range ridge between Mount Washington and Mount Jefferson, its eastern face dropping steeply into the Great Gulf Wilderness, the largest glacial cirque in the White Mountains. That exposed eastern wall gives the summit an airy character despite the gentler western approach. On clear days the views stretch from Washington's dome to the southeast, north along the ridge through Jefferson, Adams, and Madison, west across the Ammonoosuc valley, and south toward the Franconia Range.
Although Clay clears 5,500 feet, the AMC does not count it as a Four-Thousand Footer; it rises less than 200 feet above the col with Washington, making it a secondary summit. The 1.2-mile Mt. Clay Loop branches off the Gulfside Trail and passes directly over the high point, making the summit easy to add on any Presidential traverse or Washington approach. Common routes include the Jewell Trail from near the Cog Railway base station and a longer loop over Jefferson via the Caps Ridge Trail from Jefferson Notch Road, the highest-elevation trailhead in New Hampshire.
Weather on the Presidential ridgeline can shift from clear to life-threatening within an hour. Snow is possible in any month, and winds regularly reach hurricane force. Always check the Mount Washington Observatory forecast before heading up.