Beinn Mhòr is the highest mountain on South Uist. It is a remote summit on the eastern spine of hills that run north south along South Uist, close to the eastern shore. It is classified as a Marilyn and a Graham. Beinn Mhòr is frequently climbed as a round including Beinn Choradail and Hecla. This is a committing walk, largely trackless over very rough terrain and demands good navigational skills.