Lace up your trail shoes for the Chabot/Redtail Ridge Trail Run on February 21, 2026, in scenic Castro Valley, California. This popular event, hosted by Inside Trail Racing, offers a range of distances to challenge every runner, from a spirited 5K, 10K, and Half Marathon to the more demanding 30K and 50K ultras. Typical race day conditions in late February offer pleasant highs around 63°F and lows around 45°F, with only a 10% chance of precipitation, creating an ideal climate for hitting the trails.

The course, winding through Lake Chabot Regional Park and connecting to the extensive trails of Anthony Chabot Regional Park, promises breathtaking scenery featuring eucalyptus forests, grassy meadows, tranquil lakeside paths, and invigorating hilltop vistas. While some sections may include paved surfaces, approximately 85% of the course is un-paved, offering a true trail running experience. Known as a "typically faster race with less elevation," the Chabot/Redtail Ridge Trail Run is an excellent opportunity for those aiming for a personal best or new to the world of trail racing. Elevation gains range from approximately 165 feet for the 5K to a substantial 4,800 feet for the 50K, providing varied challenges across distances. Runners can expect well-stocked aid stations along the route, offering a wide array of energy gels, chews, snacks, and hydration, including Gu products, Skratch Labs, and fresh fruit, ensuring you're fueled for success.

Beyond the stunning views and runner-friendly course, the Chabot/Redtail Ridge Trail Run offers a welcoming atmosphere, celebrated by past participants for its "amazing crew and volunteers." All finishers receive a custom medal, while the top three overall winners in each distance are awarded a custom trophy. 50K finishers also earn a commemorative pint glass, and even the "Dead Last Finisher" receives a special award. After crossing the finish line, 30K and 50K runners can look forward to a delicious Baja Fresh meal, a highlight of the post-race festivities. Additionally, this race welcomes four-legged running companions, allowing dogs to join participants as long as they start at the back of the pack. This blend of accessibility, challenging yet runnable trails, and a rewarding race experience makes the Chabot/Redtail Ridge Trail Run a standout event on the trail running calendar.