Grand Island Trail Marathon
Race Day Weather
Warm day ahead, stay hydrated
Runners will face a temperature rise from 58°F at the start to 72°F by the finish, with humidity averaging 72% and a dew point of 58°F. Wind will be light from the WNW, becoming a non-factor for pacing. Runners should adjust their pace conservatively and ensure proper hydration as the temperature increases.
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Race Info
The Grand Island Trail Marathon takes place on Grand Island, a roughly 13,500-acre island in Lake Superior reachable only by ferry from Munising, Michigan. The race offers 50K, marathon, and half marathon distances along the island's perimeter trail, passing 300-foot Jacobsville sandstone cliffs and shoreline views of Pictured Rocks National Lakeshore. The marathon course measures about 27 miles, longer than the standard 26.2-mile distance. Entries are capped at 500 runners combined across all three distances.
