Mammoth Bar Trail Runs

Trail Run at Sly Park – Summer takes place in the Sly Park Recreation Area (Pollock Pines), with all races starting at the Scales Parking Lot and longer distances finishing at the Waterfall Trailhead. Distances include 5K, 10K, 8 Mile, Half Marathon, 17 Mile, Trail Marathon, and 50K, capped at 100 r..

The Gold Rush Growler Trail Runs, held at Granite Beach in Folsom Lake State Recreation Area, feature scenic 10-mile and 5K trail races along shoreline and single-track trails. The 10-mile course includes diverse terrain with paved park roads, secret trails, and notable landmarks like Oak Point, Dot..

The Sunset & Cider Trail Races, held in Auburn, California's scenic American River Canyon, offer three trail running distances: 50K, 13 miles, and 5 miles. The courses feature mostly runnable single-track trails with some short neighborhood road sections and varying elevation gains—3,875 ft for the..

The Auburn Half Marathon, held in Auburn, California—known as the Endurance Capital of the World™—offers trail running on the scenic Western States Trail. The event features a half marathon, 12K, and 5K distances, all starting at Overlook Park and winding through Auburn State Recreation Area, includ..

The Yuba Gold Trail Runs take place near Nevada City, California, in the scenic gold country region. The event offers multiple distances including a 50K, 35K, and half marathon, all featuring beautiful views of the South Fork Yuba River and the historic Malakoff Diggins hydraulic mining site. The st..

The Mile Madness Endurance Run is a multi-day ultrarunning event held at Sunset Whitney Recreation Area in Rocklin, California. The course features a professionally measured 1.05-mile loop, mostly on dirt trails with some paved sections, offering smooth terrain and about 62 feet of elevation gain pe..