Grandmas Marathon

Grandmas Marathon 2027 Course Analysis

Grandmas Marathon is a full marathon held in Duluth, United States of America. It is scheduled for Sunday 20 June 2027. The course is run on trail surface with 170m of total climbing, with its high point near 225m above sea level. For registration and full race details, visit the official Grandmas Marathon website.

Elevation Profile

With 170m of total climbing, this is a gently undulating course. The elevation changes are manageable for most runners and shouldn't greatly affect your pacing.

Expected Race Day Weather

Based on historical weather data for June, the expected race day conditions are as follows. Moderate temperatures between 10°C and 22°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance on race day. There is a low chance of rain (13%), so dry conditions are likely.

Surface Type: Trail

Grandmas Marathon is a trail race, meaning the course includes unpaved surfaces such as dirt, gravel, or forest paths. Trail surfaces are usually slower than the road equivalent - often by 10-20% - because of uneven footing, technical sections, and frequently steeper gradients, though a smooth, non-technical or downhill trail can run faster than that suggests. Trail-specific shoes with good grip are recommended.

Looking for an easier marathon or a tougher challenge? You can also compare Grandmas Marathon against other marathons to find the right race for your goals.