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

3 Bears Trail Races — 50 Miles

50 Miles·6,096 ft gain·Preston, Idaho
ultra50 mile

AI-generated image

Distance50 Miles
Gain6,096 ft
DateDate TBA
Difficulty3/5

About This Race

The 50-mile option provides a substantial ultra challenge without the extreme commitment of the 100-mile distance. This middle-ground distance allows runners to experience the course's variety while testing their endurance capabilities over a demanding but manageable timeframe. The distance appeals to runners stepping up from shorter ultras or those seeking a challenging one-day effort.

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 6,096 ft over 50 miles, with the steepest section between mile 85–mile 85.

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.