Registration for Tahoe Rim Trail Endurance Runs will open on December 7, 2025 with four distances to choose from: 23K, 50K, 100K and the 100 Mile. The 100 Mile has long been a qualifier for Western States, but the 100K offers a new qualifying opportunity for sub-20 hour finishers. The 23K was a popular distance during our 2025 Alt-TRTER during the Marlette Lake Dam reconstruction backcountry closures, and we have added it to our regular line up.
Watch for updated course maps, elevation profiles, trail work forms and all things logistical. We can’t wait to host you all in 2026!