Mount Isolation is a remote summit in New Hampshire’s White Mountains, in Coos County within the Presidential Range. It is the highest peak on the Montalban Ridge, a spur extending south from Boott Spur, and lies in the Presidential Range–Dry River Wilderness. More than its height, its reputation has been shaped by its isolation, which makes it one of the White Mountains’ most distant-feeling peaks. Although it only narrowly qualifies as a four-thousand-footer by the Appalachian Mountain Club’s standard, at 4,000 feet with 200 feet of prominence, it remains a notable hiking destination because of its wilderness character and connection to the broader range.