King Of The Hammers is an annual off-road race held in Johnson Valley, California. It combines high-speed desert racing with extreme rock crawling, attracting thousands of competitors and spectators. The event typically takes place in February and features various classes of vehicles, including Ultra4 cars, which are specially designed for both terrains. The race covers a challenging course of approximately 200 miles, with teams facing obstacles like steep rock formations and rugged terrain. King Of The Hammers has gained popularity since its inception in 2007, becoming a significant event in the off-road racing community and showcasing advanced engineering and driving skills.