Flickr/D.H. Parks

Height: 13,796 feet
Challenges: Elevation, Heat
Relative Difficulty:
Ever wonder what it’s like to be the highest person for thousands of miles? If so, take a crack at this dormant volcano. The rough, shifting (and, in the summer, hot) lava rocks can be exhausting on the ascent, and the high elevation coming from near sea level is enough to give an unprepared hiker a sharp altitude sickness headache, but the lofty summit is worth it. The quiet solitude lends particularly well to watching a Hawaiian sunrise, so start out early to squeeze the most out of this breathtaking view over all of the Pacific.