No medals. No route. No spectators. Just 340 miles of sand and silence stretching from Los Angeles to Las Vegas. The Speed Project is one of the most grueling, unsanctioned endurance races on the planet. A rebellious experiment of two friends that has evolved into a global movement of suffering with events all over the world in countries as far off as Chile and France. Each spring the marquee race draws hardcore runners—and niche running brands—from more than 30 countries to California to compete in relay teams of six—or solo if so masochistically inclined.
To understand why, I dove into the history of The Speed Project, and spoke with three runners who participated in the 2025 event this past March.
The TSP story begins in 2013, when Nil Arend and Blue Benedum, craving a more wild, less structured form of distance event than a traditional marathon, decided to run the 309 miles from Santa Monica to Las Vegas. The pair passed through Hollywood and the Antelope Valley, then into the Mojave Desert and along the edge of Death Valley National Park, the Old Spanish Trail, and finally Route 160 into Vegas. The next year, they were surprised to learn that other members of the run community wanted to take on the challenge too, which set the stage for the annual event The Speed Project has become.