"TRTER (Tahoe Rim Trail Endurance Runs)" is a charitable organization promoting outdoor endurance events while supporting environmental preservation and community well-being. The organization is renowned for hosting the Tahoe Rim Trail Endurance Runs, a series of challenging ultramarathon events in the Sierra Nevada mountains along the stunning Tahoe Rim Trail.  These races, which include 50K, 50 miles, and 100 miles, challenge runners with rugged terrain, high elevations, and stunning views of Lake Tahoe and the surrounding wilderness.  Participants experience a mix of steep climbs, technical descents, and scenic singletrack trails, all while testing their endurance and mental toughness. The event is known for its physical challenges and a strong sense of community and support among runners, volunteers, and organizers. TRTER is organized by a charitable organization that emphasizes environmental stewardship. Proceeds benefit local charities and trail maintenance efforts. The Tahoe Rim Trail Endurance Runs, are a must-do for ultrarunners seeking a challenging and scenic adventure in one of the most beautiful natural settings in the United States. TRTER's mission goes beyond organizing world-class endurance races; it is committed to giving back to the community and environment. Proceeds from its events support various local charities, environmental conservation efforts, and trail maintenance programs. TRTER emphasizes sustainability in all aspects of its events, ensuring that the natural beauty of the Tahoe Rim Trail is preserved for future generations of outdoor enthusiasts. In addition to their focus on environmental stewardship, TRTER fosters a strong sense of community among participants, volunteers, and sponsors. The events organized by TRTER are known for their camaraderie, with a supportive atmosphere that encourages runners of all levels to push their limits while enjoying the breathtaking scenery of the Tahoe region. Through their efforts, TRTER continues to positively impact the endurance sports community and the environment.