Mountain Lakes 100

The Mountain Lakes 100 is a scenic 100-mile ultramarathon held in Oregon, starting and ending at Olallie Lake. The race showcases Oregon's natural beauty with trail sections along dozens of lakes, rocky terrain, mountain views, and 60 miles of the Pacific Crest Trail. It is a well-supported event with experienced volunteers and outstanding aid stations.

The race is a qualifier for the Western States 100 and emphasizes trail maintenance, requiring participants to complete 8 hours of trail work. Organized by Go Beyond Racing, the event prioritizes safety, environmental sustainability, and participant experience. Registration is open until late August, with a capacity of 150 runners. Visit the organization's website for the most recent information.