Back 9 Endurance Run
Copper Harbor, United States • 23 May 2026
Event overview
The Back 9 Endurance Run is a timed endurance event held at Keweenaw Mountain Lodge in Copper Harbor, MI on May 23, 2026. Participants aim to complete as many laps of the loop course as they choose within the selected time limit. Registration closes May 22, 2026. There are no refunds or transfers.
Course and location
The course is a 3.68-mile loop that uses wooded trails (including the Back 9 Trails) and paths across the lodge's historic wilderness golf course. The route offers periodic views of Brockway Mountain and Lake Superior and lies within the Keweenaw Dark Sky Park. Runners are responsible for their own clothing, shelter, food, hydration, and outdoor survival. Organizers provide a warm-up shack and some food, snacks, and hydration.
Race formats and rules
- 24-hour solo and team formats
- 12-hour solo and team formats
- Team sizes: 2-person and 4-person teams
Only one team member may be on the course at a time. Team members must begin a new lap at least every hour; solo runners must begin a new loop at least every two hours. Pacers are allowed for 24-hour participants and may begin pacing at dark through the finish. Support crews may be located at the gazebo. No partial laps are counted; final results use the last completed lap. Littering is prohibited. Required gear includes a headlamp with extra batteries, rain gear, extra socks, warm outer layer, hat, and gloves. Race officials may cancel the event for extreme weather and may remove runners for safety reasons. Visit the organization's website for the most recent information.