Calero Hills Trail Fest

The Rancho Hills Trail Run - Summer is a challenging trail running event held in the scenic Rancho Cañada del Oro Open Space Preserve near Morgan Hill, California. The race offers multiple distances including 50K, marathon, 30K, half marathon, 10-mile, 8-mile, 10K, and 5K, catering to a wide range o..

The San Lorenzo River Trail Run, held in Santa Cruz, California, offers a scenic trail running experience through towering 1500-year-old Coastal Redwoods, stream canyons, meadows, and diverse forest landscapes. The event features multiple race distances including 10K, Half Marathon, 30K, Marathon, 5..

The Skyline 50K Endurance Run, held annually in August at Lake Chabot Marina in Castro Valley, California, is the longest-running 50K race in the state and one of the oldest in the U.S. The course features a large loop through the scenic East Bay Regional Parks, reaching Skyline Gate. Known for its..

The Mount Madonna Challenge, held in Gilroy, California, is a historic trail running event featuring a half marathon, 10K, and 5K races. Known for its challenging elevation gains—2,828 feet for the half marathon, 1,532 feet for the 10K, and 843 feet for the 5K—the race courses offer a rigorous test..

The Almaden Hills Trail Run - Summer is a challenging trail running event held at Almaden Quicksilver Park in the scenic Almaden Valley, San Jose, California. The course features a mix of 60% dirt roads and 40% single-track trails with significant elevation gains, offering runners beautiful views an..

The Santa Cruz Trail Run, hosted by Inside Trail Racing, takes place at Henry Cowell Redwoods State Park in Felton, California. This scenic event features three distances: 10K, Half Marathon, and 30K, with courses winding through giant redwoods, twisting single-track trails, dirt fire roads, and a u..