Seymour Mountain, as viewed from the summit of Panther Peak. Seymour Mountain is the 34th highest peak in the Adirondacks. It is what is considered a "trailless" peak, meaning that there is no officially maintained trail to the top. What this usually means is that there is still a beaten path, but that it may be at times difficult to follow and may have lots of blowdown. Seymour's Elevation is 4090 feet.