Porter Mountain
Porter Mountain is a mountain in the Adirondacks in the U.S. state of New York. It is the thirty-eight highest of the Adirondack High Peaks, with an elevation of. The mountain is located in the town of Keene in Essex County. It is named after Noah Porter, a president of Yale University, who made the first recorded ascent with trail guide Ed Phelps in 1875. It was previously called West Mountain.
A trail to the summit of Porter Mountain begins on New York State Route 73, from the center of Keene and from the Adirondak Loj road. The trail continues to an intersection with a trail to the nearby peak of Cascade Mountain. The trail to Porter Mountain continues to the right and descends to a col before ascending to the summit, for a total one-way distance of and ascent of. This route is currently being replaced with a longer, trail, beginning at the Mount Van Hoevenberg trailhead. As of 2025, the new trail remains under construction.
A second route to Porter Mountain from Marcy Airfield follows the yellow-blazed Ridge Trail. Beginning at the overflow parking lot for the Garden Parking Lot on New York State Route 73, this trail passes Marcy Airfield and goes over the summit of Blueberry Mountain before arriving at the summit of Porter Mountain. This route has a one-way distance of and ascent of.
A third trail to Porter Mountain from the Garden Parking Lot has been closed since 2019.