Chino Grinder is Arizona’s longest running (circa 2014) and original Gravel Grinder. With 75-95% unpaved surfaces, the Chino Grinder offers a great challenge to push your limits as a cyclist. Whether you are looking to complete your first long-distance ride or set a personal best, the Chino Grinder provides a challenging and rewarding experience. These types of events originated in the American Midwest and quickly found favor with riders around the world. This event attracts a diverse group of participants who share your love of cycling. Well-stocked aid stations and friendly volunteers provide a friendly and supportive atmosphere to get you up and over plenty of climbs and descents creating a challenging and rewarding experience for cyclists of all levels. 120 mile Full Grind, 60 mile Half Grind, 40 mile Fine Grind, 20 mile Fun Grind routes available!