Salt and Sulfur 420

Salt and Sulfur 420 is a 420-mile ultramarathon starting in Salt Lake City, Utah, and ending in West Yellowstone. The race features a combination of urban and trail running, passing through scenic locations such as the Wasatch Range, Ogden Canyon, Logan Canyon, Bear Lake, Jackson Hole, the Tetons, and Yellowstone. Participants are responsible for their own resources, and crew support is optional.

The event emphasizes mental resilience, as it is considered more about mental strength than physical ability. It is a challenging journey that tests endurance, perseverance, and emotional strength, and is suited for experienced ultra runners seeking a unique and demanding adventure. Visit the organization's website for the most recent information.