Lace up your trail shoes for the Lost Trail Half Marathon and 5K, an unforgettable running experience set against the stunning backdrop of Folsom Lake. Taking place on Saturday, February 21, 2026, in Granite Bay, California, this event promises a challenging yet incredibly scenic adventure for runners of all levels. Typical race day conditions in late February often see comfortable highs around 64°F and lows around 44°F, with a minimal 13% chance of precipitation, creating ideal weather for hitting the trails.

The Half Marathon course is a beautiful and very well-marked out-and-back route that immerses runners in 13.1 miles of single-track trails along the picturesque shoreline of Folsom Lake, winding through lush forests and offering continuous scenic views. With an elevation gain of 227 meters, it's classified as a moderately difficult race, featuring small hills in the early miles before introducing more challenging, short but steep climbs, including the notable Mooney Ridge on the return to the finish line. The course is approximately 95% un-paved, providing an authentic trail running experience that starts and finishes on the serene Granite Beach overlooking Folsom Lake. For those looking for a shorter, gentler option, the 5K offers a scenic 3.1-mile loop with just 30 meters of elevation gain, also along the beautiful trails of Folsom Lake.

Organized by TBF Racing, the Lost Trail Half Marathon is renowned for its friendly and supportive atmosphere, blending natural beauty with a well-organized event experience. Runners can expect five well-stocked and friendly aid stations along the Half Marathon route, strategically placed at miles 2.2, 4.2, 6.2, 10, and 11.5, offering water, Gatorade, and various runner goodies. All finishers in both the Half Marathon and 5K will receive custom Lost Trail Finisher Medals, with overall and age-group awards celebrating top performances. Packet pickup begins early at 6:30 AM on race day, with the Half Marathon starting at 8:00 AM and the 5K at 8:10 AM.