Almaden Hills Trail Run - Summer

The Calero Hills Trail Fest, held at Calero County Park in San Jose, CA, offers a variety of trail running distances including a marathon, 30K, half marathon, 10 miler, 10K, and 5K. The courses feature challenging ascents and descents through scenic old oak groves, single track trails, and dirt path..

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

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..

Race Thru the Redwoods is a scenic running event held in Felton, California, starting and finishing at Roaring Camp Railroads. The main 10K race takes participants through the majestic redwoods of Henry Cowell Redwoods State Park, offering a beautiful natural setting. The event also features a Kids..

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

The Santa Cruz Track Club Cross Country Challenge is a 4.15-mile race held on the fire roads of the upper University of California, Santa Cruz campus. The course consists of two loops, starting and finishing at an open meadow above the UCSC Firestation on Chinquapin Road. This event is part of the P..