Tail of the Dragon (Tennessee/North Carolina)

Three hundred and eighteen curves in just eleven miles make the Tail of the Dragon the most intense pure-driving road in America, outperforming #9 Hana Highway in sheer technical demand by a factor of nearly 30 turns per mile. This legendary stretch of US 129 on the Tennessee-North Carolina border offers zero intersections, driveways, or distractions — just relentless asphalt carved through the Great Smoky Mountains. Car enthusiasts and motorcyclists travel thousands of miles to tackle its famous corners; the Tree of Shame at Deals Gap Motorcycle Resort bears twisted parts from vehicles that failed the challenge. It’s 50% more challenging than the average mountain pass, though it sacrifices scenic waterfalls and black sand beaches for steering-wheel-focused thrills.