Big Horn Mountain Wild and Scenic Runs

The Bighorn Mountain Trail 100 is an epic mountain endurance adventure crossing through Little Bighorn and Tongue River areas of the Bighorn National Forest. Participants have 34 hours to navigate this remote, technical out-and-back course (average 2.94 mph). Mother Nature provides over 20,500 feet of ascent and 20,750 feet of descent testing the most seasoned ultra-runners with 76 miles of technical single-track trail, 16 miles of rugged 2-track jeep trail road, and 8 miles of gravel road. The Bighorn 100 is one of the classics, demanding you to reach deep down to your core of mental and physical fortitude.

Our event is truly remote. Stretches of 18-mile technical trail will serve as your only way in and out of the back country. Have no fear; we have a family of trail crew volunteers that are crazier than you. They’ve been on the trail for weeks leading up to this event preparing the trails for the adversity you are about to experience.

This is not a mountaineering experience and we pride ourselves on a well-marked course. Trail markings will consist of orange flagging tape frequently attached to trees, bushes, rocks, rattlesnakes, and black bear (haha just making sure you are paying attention). In meadow areas, orange flagging will be attached to wire ground flags. White powder arrows (made from lime) will be used at a few junctions on the course. Reflective tape attached to the flagging and glow sticks will be used to enhance visualization during the night sections of the course (Kern’s Cow Camp – JAWS Trail Head). However, despite the best efforts of race management, occasionally the elk have other plans in mind for you and have been known to devour the markings on sections of this course within 48 hours of placement. Our course director and trail team work endlessly to replace flagging during the event.