The Great Gulf Trail ascends Mt. Washington through the deepest glacial cirque in the White Mountains, a remote wilderness basin walled by the Northern Presidential peaks. The first five miles follow the West Branch of the Peabody River through forested terrain, with multiple stream crossings that turn treacherous in high water and stretches of muddy, wet rock that slow progress considerably. At Spaulding Lake (4,228 ft), the headwall comes fully into view, rising almost vertically above.
That headwall is the defining challenge. The lower section weaves back and forth across a slippery streambed, requiring hands-and-feet movement on wet rock with stretches of genuine exposure where a fall would be serious. Cairns are sparse, and winter avalanche slides periodically erase them entirely; the upper half has no blazes at all, making route-finding in low visibility genuinely dangerous. The full climb spans roughly 6.5 miles and 4,600 feet of elevation gain.
Above treeline, Presidential summit weather can arrive with almost no warning. Snow lingers in the Great Gulf well into June, leaving the headwall icy and brook crossings high and fast. A bridge closure on the West Branch of Peabody River has periodically turned a standard crossing into a dangerous ford; confirm current conditions before heading out.
