The U.S. National Championships refer to a series of competitive events held in various sports across the United States. These championships determine the national champions in their respective disciplines, showcasing the top athletes and teams. Events can range from tennis and swimming to gymnastics and track and field. Each championship typically features qualifying rounds leading to finals, where the best performers compete for titles and medals. The U.S. National Championships are often organized by governing bodies, such as USA Swimming or U.S. Tennis Association, and play a crucial role in selecting athletes for international competitions like the Olympics.