Mount Major is a mountain located in Alton, New Hampshire, south of Lake Winnipesaukee and northeast of Straightback Mountain in the Belknap Range. The scenic, rocky summit is a popular hiking destination, accessible by multiple trails including the Mount Major Trail, the Brook Trail, and the Boulder Loop. The easiest trail is the Mount Major Trail…Mount Major is a mountain located in Alton, New Hampshire, south of Lake Winnipesaukee and northeast of Straightback Mountain in the Belknap Range. The scenic, rocky summit is a popular hiking destination, accessible by multiple trails including the Mount Major Trail, the Brook Trail, and the Boulder Loop. The easiest trail is the Mount Major Trail. It is marked with blue dashes.