Salt and Sulfur 420

Salt and Sulfur 420

Salt and Sulfur 420 is a crewed endurance event covering 420 miles. The route begins in Salt Lake City, Utah and finishes in West Yellowstone. The course is mainly on paved roads with about 50 miles on dirt surfaces. Registration for the 2026 edition closed on March 1, 2026.

The event is presented as a multi-day journey that emphasizes sustained mental effort alongside physical endurance. Organizers frame the focus around adventure, connection to nature, and personal growth. The description notes that participants face extended periods of uncertainty and exhaustion, and that mental challenges become the primary factor over several days.

All event proceeds will be donated to the Women’s Center in Salt Lake City. The listing identifies the format as a crewed event and locates the start area in Salt Lake City. The material characterizes the route as rugged in places and intended to test participants over long distances, with the majority of the distance on roads and a smaller portion on dirt.

Participants should expect a long, multi-day route and conditions that require sustained physical and mental resilience. The event is scheduled for August 5, 2026 and is organized as an in-person race. Visit the organization's website for the most recent information.