The Yellowstone Rim Runners' was established in 1981. Our mission is to promote health and fitness through running and walking for all ages and paces. We strive to build the Billings running community by offering a wide variety of fun activities to get you moving and meet other runners and walkers. We are a 501(c)(3) nonprofit running club, powered by volunteers. We are a member of the Road Runners Club of America and USA Track & Field.