Trail running course through singletrack trails in Idaho, USA
3 Bears Trail Races

3 Bears Trail Races — 100 Miles

100 Miles·6,358 ft gain·Preston, Idaho
ultra100 mile

AI-generated image

Distance100 Miles
Gain6,358 ft
DateDate TBA
Difficulty4/5

About This Race

The 100-mile distance represents the ultimate test of endurance and mental fortitude at 3 Bears. Runners face the full scope of the course's challenges across multiple loops, requiring careful pacing, nutrition strategy, and crew support to reach the finish. This distance attracts experienced ultrarunners seeking a serious challenge within Alabama's trail running community.

The courses utilize a combination of clockwise and counter-clockwise loops centered around Danish Pass and the Highline Trail. The Papa Bear 100-mile follows the most complex routing, beginning with the 50-mile course clockwise to Danish Pass, then completing a counter-clockwise loop before reversing the entire 50-mile route. The terrain features technical singletrack through high mountain forests, with significant elevation changes and challenging navigation points that require focused attention from runners.

Elevation Profile

Elevation profile estimated from terrain data. Actual course may differ.

The course gains 6,358 ft over 100 miles, with the steepest section between mile 172–mile 173.

Location

Notable Features

This race offers the unique opportunity to experience the original Bear 100 course that operated for nearly a decade before the current Bear 100 moved to a different location. The multi-loop format and complex routing create a technical navigation challenge that separates this event from more straightforward ultra courses. The intimate field size and mountain lodge start/finish at Deer Cliff Inn provide a throwback atmosphere to ultrarunning's earlier, more grassroots era.