Mountain Lakes 100
Olallie Lake, United States • 19 Sep 2026
Mountain Lakes 100 Event Details
The Mountain Lakes 100 is a 100-mile trail running event that starts and finishes at Olallie Lake in Oregon. The course runs along dozens of lakes and includes technical and rocky sections, views of mountain peaks, and about 60 miles on the Pacific Crest Trail. The race is described as highly scenic.
Registration for the event is not a lottery. The race is a Western States 100 qualifier. The total runner capacity is 150. There is a trail work requirement for all participants; runners must complete 8 hours of trail work between October 1 of the year before the race and September 1 of the race year.
The event is produced by Go Beyond Racing, which organizes over three dozen trail races each year. The organizer states that their races are highly organized with a focus on safety, donate to a beneficiary, and aim to reduce environmental impact. Visit the organization's website for the most recent information.