The Mountain Running Association (MRA) is an organization dedicated to promoting and supporting the sport of mountain running in the United States. It focuses on organizing events, providing resources for athletes, and fostering a community of runners who enjoy the challenges of mountainous terrain. The MRA also works to ensure that mountain running is recognized as a legitimate sport. In addition to organizing races, the MRA offers educational materials and training programs for runners of all levels. The association collaborates with local clubs and organizations to encourage participation and develop the sport further. Through its efforts, the MRA aims to enhance the experience of mountain runners and promote the beauty of mountain landscapes.