Steven Garner, a 55-year-old endurance athlete, took 55 days to ski the 555-mile section of the North Country Trail that crosses the Upper Peninsula, from the Mackinac Bridge to the Wisconsin border. Courtesy of Steven Garner
By Melissa Wentarmini Beacon Correspondent By the time Steven Garner reached the end of his 555-mile ski journey through the Upper Peninsula, he was exhausted,…