Dos Rios Sundown Run

Dos Rios Sundown Run

Dos Rios Sundown Run takes place on May 30, 2026 at Dos Rios State Park near Modesto, California. The event is organized by Dusty Bottoms and uses trails inside the state park.

The course runs on maintained fire roads and passes alongside the Tuolumne River. Participants choose between two distances:

• 3 miles
• 5 miles

Registration is free. Registration opens on May 3, 2026 and closes on May 30, 2026; closing times differ by distance. The event is held in an informal, after hours format and is described as a "fat ass" event.

There is an informal social gathering after the runs. Donations are accepted and directed to support park rangers and the park. Visit the organization's website for the most recent information.