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Your complete Duluth 2025 marathon calendar. Find every marathon happening in Duluth, Minnesota in 2025 with comprehensive race details, registration information, and official results, including the Grandma's Marathon, and Eugene Curnow Trail Marathon.
Each marathon listing includes a 2025 marathon guide including dates, locations, course details, weather conditions, and relevant links for registration and more information. We maintain the most current results database, publishing official results on race day, plus complete 2024 results for year-to-year comparison.
Duluth, Minnesota
June 21, 2025
Grandma's Marathon offers a picturesque 26.2-mile course from Two Harbors to Duluth, featuring stunning views of Lake Superior and challenges like the notable Lemon Drop Hill. This June event combines a warm, small-town atmosphere with enthusiastic community support, making it an affordable and memorable experience for over 20,000 runners each year.
Duluth, Minnesota
July 12, 2025
The Eugene Curnow Trail Marathon challenges runners with a rugged 26.2-mile course from the Lake Superior Zoo in Duluth to the Munger Trailhead in Carlton, featuring 2,969 feet of ascent across woodland trails and technical sections. As a preparatory race for the Minnesota Voyageur Trail Ultramarathon, it offers a rewarding experience with breathtaking views, crucial aid stations, and a supportive community, making it an ideal test for those seeking to push their limits in Minnesota's scenic wilderness.