Mountain Lakes 100

Mountain Lakes 100 is a scenic 100-mile trail race held at Olallie Lake, Oregon, featuring rugged and technical terrain with rocky sections and stunning mountain views. The course includes about 60 miles along the Pacific Crest Trail and passes dozens of lakes, showcasing some of Oregon's best trail running. The event is well-supported with numerous aid stations staffed by experienced volunteers focused on helping runners finish.

It serves as a Western States 100 qualifier and has a capacity of 150 participants. A unique feature is the mandatory trail work requirement of 8 hours to promote trail maintenance and community involvement. Visit the organization's website for the most recent information.