The Sinister 7 Ultra is a formidable test for any runner, featuring a challenging 100-mile (161 km) course that navigates the breathtaking and rugged terrain of Alberta’s Rocky Mountains. With over 6,600 meters of elevation gain, this race demands thorough preparation. Participants tackle seven stages, each showcasing the region's geographical and historical highlights, all under a strict 30-hour completion time. For those seeking shorter distances, the event also offers a grueling 50-mile (80 km) course composed of four stages and a 50-km route divided into three stages. Regardless of distance, competitors will be tested by the tough conditions inspired by the intimidating Seven Sisters Mountain that overshadows this remarkable course.