The Tallest Mountain East Of The Mississippi
The tallest mountain east of the Mississippi River is Mount Mitchell in North Carolina, and it is a genuine overachiever: at 6,684 feet, it is the highest peak not just east of the river but in the entire Appalachian range and the whole eastern United States. It is also a mountain with a wonderfully grim backstory, a summit you can reach with a minivan and a snack budget, weather that seems convinced it lives in Canada, and a height that would get it politely laughed out of Colorado. Let's take a look at the roof of the East.
The Answer: Mount Mitchell, North Carolina

Mount Mitchell sits in the Black Mountains, a compact and craggy subrange of the southern Appalachians about 35 miles northeast of Asheville. At just over a mile high, it towers above every other summit in the East, and of the ten highest peaks in the eastern U.S., six are clustered in this one small range. For a long time, people assumed the East's tallest mountain was New Hampshire's Mount Washington, a respectable 6,288 feet. Then someone actually did the math on the Black Mountains and discovered that this dark, rounded North Carolina summit, originally nicknamed "Black Dome," stood a clear 400 feet higher. The record has belonged to the South ever since.
Named for a Man Who Died Proving It

Here is where it gets dark. The mountain is named for Elisha Mitchell, a University of North Carolina science professor who measured it in the 1830s using a barometer and some clever math, landing within about 12 feet of the modern figure. His claim that it was the highest peak in the East was loudly disputed by his own former student, Congressman Thomas Clingman, and the two men feuded bitterly for years. In 1857, Mitchell hiked back up to re-verify his numbers, and things went catastrophically wrong. He went up the wrong route, got lost, and fell to his death from a waterfall, his pocket watch found frozen at 8:19:56. A search party led by the legendary guide "Big Tom" Wilson recovered his body days later at the base of the falls. Mitchell was proven right, the peak was named for him, and he is buried at its summit. Clingman, to his credit, conceded the fight, reportedly saying, "You don't keep fighting with a dead man." As a consolation prize, he got Clingmans Dome.
A Subarctic Climate in the South

Do not let "North Carolina" fool you into packing shorts. Mount Mitchell's summit is brutally, comically cold. The highest temperature ever recorded up there is a mere 81 degrees Fahrenheit, meaning the mountain has literally never had a genuinely hot day. Temperatures at the top routinely run 20 to 30 degrees colder than the valleys below, and snow, ice, and freezing fog can roll in during any month of the year, July very much included. The summit is cloaked in a dark forest of Fraser fir and red spruce, the kind of subalpine woodland you would expect in Maine or eastern Canada, not a few hours from the Carolina barbecue belt. Climb, or drive, into that forest and you leave the South behind entirely.
You Can Drive to the Summit

For all its dramatic history, conquering the tallest mountain in the East is refreshingly easy. A 4.6-mile spur road, NC 128, branches off the scenic Blue Ridge Parkway and delivers you to a parking lot near the summit, from which a paved 980-foot path leads to the observation deck. There is a nature center, a restaurant, and a concession stand that will happily sell you a hot chocolate at the top of the East, which is genuinely useful given the aforementioned Canadian weather. The whole thing sits inside Mount Mitchell State Park, which in 1915 became North Carolina's very first state park, created specifically to stop loggers from clear-cutting the peak. So yes, the highest point east of the Mississippi has a gift shop. It is not exactly Everest base camp.
It Would Be a Foothill Out West

Now for a dose of humility. Mount Mitchell is the undisputed king of the East, but geography can be cruel. Colorado alone has more than 50 peaks taller than 14,000 feet, well over double Mitchell's height, and Alaska's Denali, at 20,310 feet, is roughly three times as tall. In fact, Mount Mitchell is not even the highest point east of the Rocky Mountains, a title that belongs to Black Elk Peak in South Dakota's Black Hills at 7,242 feet. Closer to home, the runners-up are neighbors: Mount Craig, right beside Mitchell in the Black Mountains, is the second-highest peak in the East at about 6,647 feet, and Clingmans Dome in the Great Smoky Mountains is third at 6,643. But a mountain does not need to be a giant to be a beast. Cold, rugged, storm-battered, and a full mile above the sea, Mount Mitchell earns its crown, even if that crown comes with a parking lot.