Salt and Sulfur 420

Salt and Sulfur 420

Salt and Sulfur 420 is a crewed, point-to-point endurance run of 420 miles that starts in Salt Lake City and finishes in West Yellowstone. The route is primarily on paved road with about 50 miles of unpaved dirt. The organizer frames the event as a multi-day journey that commonly requires several days of continuous effort and prolonged mental focus.

Support crews are part of the event format, and entry is selective; not all applicants are guaranteed acceptance. The event description emphasizes an emphasis on adventure, connection to nature, and personal reflection during extended time on the route.

All event proceeds are designated for donation to the Women’s Center in Salt Lake City. The listed local venue and meeting point information includes an address in Salt Lake City. Registration for the listed edition closed on March 1, 2026.

Participants should expect an extended physical and mental commitment, varied surfaces along the course, and organized crew support. The description notes that the experience may involve uncertainty and exhaustion over multiple days, shifting the focus from physical performance to coping with prolonged effort and emotional response. Visit the organization's website for the most recent information.