Western States Endurance Run

The Western States Endurance Run, often referred to as Western States, is an ultra-marathon held annually in California. Covering 100.2 miles, it takes runners through the scenic Sierra Nevada mountains from Squaw Valley to Auburn. Participants face diverse terrain, extreme weather, and significant elevation changes, making it one of the most challenging races in the world. Established in 1974, it attracts elite and amateur athletes alike, emphasizing endurance, strategy, and mental toughness. The event is part of the prestigious Western States 100 Mile Endurance Run series and serves as a hallmark of ultra-distance running.