Western States 100 Mile Endurance Run
Description
- Location: Auburn, CA, USA
- Race Date: 06/28/2025
- Race Distances: 100 Mile, Ultra Marathon
The Western States 100 Mile Endurance Run, often referred to as the WSER, is one of the most iconic and prestigious ultramarathons in the world. Held annually in California, this race covers 100 miles of rugged terrain, starting in Olympic Valley and finishing in Auburn. Its challenging course takes runners through the Sierra Nevada mountains, offering a diverse and often unforgiving landscape of deep canyons, mountain passes, and river crossings. Runners face significant elevation gain, with over 18,000 feet of climbing and 23,000 feet of descent.
Dating back to 1974, the Western States 100 has earned a reputation as the ultimate test of endurance, perseverance, and mental fortitude. The race has a strict 30-hour cutoff time, pushing participants to maintain a steady pace over the course of the day and night. Along the way, runners encounter a variety of conditions, from intense heat in the lower canyons to the possibility of snow at higher elevations.
A hallmark of the event is its outstanding community support, with aid stations spread throughout the course offering hydration, food, and medical assistance. Volunteers and local communities play a crucial role in helping runners reach the finish line, making the Western States a unique blend of personal achievement and community spirit.
Entry into the race is highly competitive, with a lottery system in place due to its immense popularity and limited spots. Only a select group of athletes earns the coveted belt buckle awarded to those who complete the race within the time limit, with a special silver buckle for those who finish in under 24 hours.
For ultrarunners, the Western States 100 Mile Endurance Run stands as a pinnacle of the sport, symbolizing the spirit of adventure, resilience, and the pursuit of pushing human limits.
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Average Temperature
- Low: 59°F
- High: 89°F
# of Finishers
Average 60-70% of approximately 369-385 entrants.