Lace up your shoes for the Cal Tri Castaic Lake on Saturday, June 20, 2026, offering challenging and scenic 10K and 5K distances in Castaic, California. Nestled just 20 miles north of Los Angeles, this event promises a memorable run amidst the stunning backdrop of Castaic Lake and its expansive 11,200-acre recreation area. Runners will navigate primarily rolling trails that offer sweeping views of the lake and wind through towering oak trees, providing both a physical test and picturesque scenery. Expect typical race day conditions with morning lows around 61F, warming to highs of 83F as the day progresses, and a beautiful 0% chance of precipitation, ensuring clear skies for your run.

The Cal Tri Castaic Lake, part of a long-standing event that benefits the Canyon High School Cross Country and Track Teams, is renowned for its welcoming atmosphere and supportive community. The 5K and 10K races typically start at the main finish line, with a well-organized staging area at Paradise Cove. Aid stations are strategically placed along the course, providing water, electrolytes, and light snacks to keep you fueled. Runners frequently praise Cal Tri events for their friendly volunteers, clear course markings, and an overall enjoyable experience.

Whether you're tackling the 5K or pushing your limits in the 10K, the Cal Tri Castaic Lake offers an engaging course with moderate elevation changes on a mix of packed dirt and pavement. This event is an ideal choice for those seeking a rewarding race experience with beautiful lakeside vistas and a strong sense of camaraderie.