Miwok 100K

The Dirty Dozen Run is an annual trail running event held at Point Pinole Regional Shoreline in Richmond, California. It features 12-hour, 6-hour, and 3-hour endurance races on a scenic 3.37-mile loop composed mostly of dirt fire trails. The course offers expansive shoreline views, including multipl..

The Muir Woods Mountain Challenge, held in Mt. Tamalpais State Park near Stinson Beach, CA, offers trail runs of 10K, half marathon, and 30K distances. The course features a challenging 2,000-foot climb early on, scenic ridge-line views of Stinson Beach and the Pacific Ocean, and technical single-tr..

The Rodeo Valley Trail Run, held in the scenic Marin Headlands near Sausalito, California, offers trail races of 8K, Half Marathon, 30K, and 50K distances. Starting near historic Fort Cronkhite and Rodeo Beach, the course features challenging steep climbs and descents along coastal trails with stunn..

Bear Creek is a trail running event held in Lafayette, California, featuring a half marathon, 10K, and 5K distances. The races take place on August 9, 2025, within the scenic Briones Regional Park. The courses are known for their challenging terrain with many hills, making them ideal for trail enthu..

The Tamalpa Headlands 50K is a challenging ultramarathon held in Sausalito, California, featuring a single-loop course through Marin County's iconic trails such as Coastal, Miwok, Steep Ravine, Matt Davis, and Dipsea. The race covers 50 kilometers with approximately 6,500 feet of elevation gain, com..

The Redwood (Summer) Trail Run, held in Oakland, California, offers a scenic race experience through Redwood Regional Park. Participants can choose from multiple distances including 5 miles, half marathon, 30K, marathon, 50K, and a free kids' 50-yard dash for children six and under. The course featu..