<P> Mount Whitney is the tallest mountain in California , as well as the highest summit in the contiguous United States and the Sierra Nevada -- with an elevation of 14,505 feet ( 4,421 m ) . It is located on the boundary between California 's Inyo and Tulare counties , 84.6 miles ( 136.2 km ) west - northwest of the lowest point in North America at Badwater Basin in Death Valley National Park at 282 ft ( 86 m ) below sea level . The west slope of the mountain is in Sequoia National Park and the summit is the southern terminus of the John Muir Trail which runs 211.9 mi ( 341.0 km ) from Happy Isles in Yosemite Valley . The east slope is in the Inyo National Forest in Inyo County . </P>
what 's the highest point in the us
Mount Whitney