Salt and Sulfur 420
Salt Lake City, United States • 7 Aug 2025
The Salt and Sulfur 420 is a challenging 420-mile ultramarathon starting in Salt Lake City, Utah, and finishing in West Yellowstone. The course features a mix of urban running and trail segments, passing through scenic locations such as the Wasatch Range, Ogden Canyon, Logan Canyon, Bear Lake, Jackson Hole, the Tetons, and Yellowstone National Park. Unlike stage races, participants must be self-sufficient, sourcing their own resources along the way, though crew support is encouraged but not mandatory. The event emphasizes mental endurance, with runners facing both physical and emotional challenges over several days. This demanding race is designed for experienced ultrarunners seeking a unique and intense journey. Visit the organization's website for the most recent information.