For the Rut Runner looking to level up from the 11K, but is not quite ready for the 28K, or who simply wants to run a beautiful and challenging course on the flanks of Lone Peak, this race is for you. While this race still has a lot of climbing and descent (approx. 4000 ft) it does not traverse the exposed and rugged ridgelines of lone peak like the Rut 28K and 50K. Instead, this course utilizes many of Big Sky’s best single-track trails creating one big loop that plays along the border of the subalpine and alpine areas of the mountain.