Mt. Umunhum Marathon

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 course offers a rigorous test of en..

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..

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. Scheduled for August 23, 2025, the event offers three distances: 10K, Half Marathon (13.5 miles), and 30K (18.2 miles), featuring challenging elevation gains and diverse te..

The Santa Cruz Track Club Cross Country Challenge will take place in Santa Cruz on Sunday 24 August 2025. You can run 4 miles.

Run-De-Vous is a multi-distance running event held at Harvey Bear Ranch Park in San Martin, California. Scheduled for August 29, 2025, it offers a variety of race options including 100 miles, 100K, 50 miles, 50K, marathon, half marathon, and a 4-person 50-mile relay. The course is a fast 2-mile loop..