Tahoe Rim Trail Endurance Run

About This Race

The Tahoe Rim Trail Endurance Run traces one of the most scenic high-altitude trail systems in North America, circumnavigating Lake Tahoe through the Sierra Nevada and Carson Range mountains. Set at elevations ranging from 6,200 to over 10,000 feet, this race showcases the pristine wilderness that surrounds the alpine lake, offering runners panoramic views across the crystal-clear waters and surrounding peaks. The course follows the renowned Tahoe Rim Trail, a 165-mile loop that connects diverse ecosystems from dense forests to exposed granite ridges. Runners navigate through multiple wilderness areas, including portions of the Desolation Wilderness and Mount Rose Wilderness, encountering everything from technical rocky sections to smooth singletrack. With 20 aid stations strategically positioned along the route, the race provides comprehensive support for the 36-hour journey around the lake. Limited to 150 participants for the 100-mile distance, this event also offers 50K and 100K options, making it accessible to runners at different stages of their ultra careers. The early July timing typically provides ideal mountain running conditions, though runners should prepare for potential afternoon thunderstorms and significant temperature variations between dawn starts and midday sun at altitude.

Elevation Profile

The course gains 17,352 ft over 102 miles, with the steepest section between mile 7–mile 7.

Course Map

Route shown is approximate and for illustration purposes.

Practical Info

Notable Features

This race offers the rare opportunity to circumnavigate Lake Tahoe entirely on foot, providing 360-degree perspectives of one of America's most beautiful alpine lakes. The combination of high-altitude running, diverse wilderness ecosystems, and the logistical challenge of a complete lake circuit creates a unique ultra experience that showcases the Sierra Nevada's most iconic destination.