Fourmidable

FOURmidable is a challenging trail running event held in Auburn, California, set in the scenic Sierra Nevada foothills. The race offers multiple distances including a 50K, 35.5K, half marathon, and 13K, catering to a range of endurance levels. Participants experience rugged terrain and stunning natural beauty, making it both a physical test and an immersive outdoor adventure.

The event features a unique prize structure supported by community donations matched by the organizers, with additional bonuses for breaking course records in the 50K. FOURmidable combines competitive racing with a strong community spirit in a picturesque setting. Visit the organization's website for the most recent information.