Introduction What? : The Mt Charleston Peak hike takes you to the highest point around Las Vegas, at 11,916 feet. This challenging and strenuous and a very long day-hike is 17.5 mile-long, out and back, with overall 5000ft of elevation gain (up and down). The trail will lead you to the summit of Mount Charleston at 11918 ft (3632 m). Depending on your hiking abilities you should plan for a full day hike 7-10 hours for completing this hike.