American River Endurance Run

Folsom, United States • 4 Apr 2026

The American River Endurance Run, held in Northern California, is the second largest 50-mile race in the United States. Starting in Folsom and finishing in Auburn, it attracts both experienced ultrarunners and newcomers. The event features three races: a 50-mile run from Folsom Point, a 25-mile run from Beal’s Point, and a 10-mile run from Rattlesnake Bar, all finishing in Auburn.

The course offers scenic views along the American River, supported by motivational signs, music, and well-stocked aid stations. Finishers receive unique awards, and post-race festivities include food, desserts, and beverages. The race is supported by sponsors and volunteers, creating a welcoming and inspiring atmosphere. Visit the organization's website for the most recent information.

Race information

50 mi
American River 50 Mile Endurance Run
25 mi
American River 25 Mile Run
10 mi
American River 10 Mile Run
Visit the organization's website for the most recent information.
Trail runs nearby

The Mammoth Bar Trail Runs, hosted by Skybreaker Racing, is a new trail running event held in Auburn, California, within the Auburn State Recreation Area. Scheduled for September 7, 2025, the event offers three race distances: a half marathon, 10K, and 5K. The courses traverse the single-track and d..

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 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..

The Granite Head will take place in Granite Bay on Saturday 11 October 2025. You can run between 6 and 11 miles.