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Back 9 Endurance Run

May 23, 2026
Copper Harbor, MI
244HR242HR124HR122HR24HR12HR
Typical Weather
Copper Harbor, MI · May 23
61°
High
43°
Low
9%
Precip

Based on data from station USW00094899 (<1 mi away)

About This Race

Prepare to push your limits at the Back 9 Endurance Run, a unique challenge unfolding on May 23, 2026, in the rugged beauty of Copper Harbor, MI. This exceptional event, based at the historic Keweenaw Mountain Lodge, offers a true test of endurance across 12-hour and 24-hour formats, with options for solo runners or teams of two and four. The goal is simple yet profound: complete as many loops as possible on a dynamic 3.68-mile course, embracing the race's philosophy of "Just One More Round" rather than competing against others.

The course itself is a highlight, winding through a captivating mix of wooded trails, including the distinctive "Back 9 Trails," and paths across the lodge's historic wilderness golf course. Runners will navigate hills, mud, and forest, all while being treated to spectacular views of Brockway Mountain and Lake Superior. Each loop presents a noticeable downhill stretch, followed by a gradual ascent, culminating in a fast downhill finish, with an elevation gain of approximately 300 feet per lap. As day turns to night, reflective orange flags every 50 yards and solar-powered lanterns guide the way, offering "friendly beacons" within the pristine darkness of the Keweenaw Dark Sky Park—an experience often lauded by participants for its unique stargazing opportunities. Typical race day conditions in late May bring comfortable highs around 61°F and lows around 43°F, with a minimal 9% chance of precipitation, creating an ideal setting for sustained effort.

Beyond the physical challenge, the Back 9 Endurance Run cultivates a supportive atmosphere. The start/finish area at the gazebo provides a central hub for runners and their support crews, featuring a warm-up shack and space for personal setups. While runners are largely self-sufficient for their outdoor survival needs, the race provides essential hydration, snacks, and a "rustic worldly food niche" to fuel your journey. Founded in 2021 by avid trail runner Mariah Summers, this race has quickly garnered a reputation for its excellent organization, clear course markings, and an emphasis on personal achievement within the breathtaking wilderness of the Keweenaw Peninsula.