The Western States 100 is the oldest 100-mile trail race in North America, starting in Olympic Valley, California, and ending in Auburn, California. The 2025 race is scheduled to begin at 5 a.m. on Saturday, June 28. 

The 2025 men's field is highly competitive, featuring top contenders such as Jim Walmsley, Kilian Jornet, David Roche, Adam Peterman, Rod Farvard, Dan Jones, and others. Weather conditions, including high temperatures and potential wildfires, can significantly impact race outcomes. 