Back 9 Endurance Run

MAY
23
2026
Run solo or with a team on a scenic 3.68-mile loop in Michigan's Copper Harbor. This 12 or 24 hour event takes place on trails and a historic golf course inside a Dark Sky Park. Lap timing rules apply for all participants.
Sat 23 May 2026
12 Hour 24 Hour

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Event Details

The Back 9 Endurance Run is a 12-hour or 24-hour timed running event. It takes place on a single 3.68-mile loop course at the historic Keweenaw Mountain Lodge in Copper Harbor, Michigan. Participants can register as a solo runner or as part of a team of 2 or 4 people.

Course & Setting

The loop winds through wooded trails, including the Back 9 Trails, and paths across the lodge's wilderness golf course. Views of Brockway Mountain and Lake Superior can be seen from the course. The event is held inside the Keweenaw Dark Sky Park. A headlamp is required for running at night. Visit the organization's website for the most recent information.

Rules & Logistics

  • For teams, only one member may run on the course at a time. A new lap must be started every hour.
  • Solo runners must begin a new loop every 2 hours.
  • Participants are responsible for their own supplies, including food, hydration, tents, and clothing. Required gear includes a headlamp with extra batteries, rain gear, warm layers, and hats/gloves.
  • Race officials can cancel the event due to extreme weather or evaluate a runner's fitness to continue.
  • No partial laps are counted towards the final distance.
12 Hour
24 Hour