Extreme North Dakota's Terrifying Run Amongst Innumerable Lost Souls

Extreme North Dakota's Terrifying Run Amongst Innumerable Lost Souls is an annual Halloween-themed trail running event held at Turtle River State Park in Arvilla, North Dakota. The race offers multiple distances and formats, including solo "Zombie" runs of 6, 12, or 24 hours aiming to complete as many laps as possible, a "Skeleton Army" team relay for 12 or 24 hours, and a shorter "Imp" 10k trail run for a single lap. The course features winding single-track trails, fast flat double tracks, gentle undulations, and a short stretch of pavement, providing a scenic and challenging experience. The event combines endurance racing with a festive, spooky atmosphere. Visit the organization's website for the most recent information.