Denali, also known by its former official name Mount McKinley, towers above the national preserve at 6,190 m above sea level. It attracts alpinists and climbers from all around the world. And not without reason! Such natural beauty is undeniably impressive. For this trip, you should be in good physical shape and have a lot of mountaineering experience. For newbies, it would be too difficult a task. Start your hike in May, but no later than July. Otherwise, Alaska's severe nature may get the best of you.