Grand Island Trail Marathon

Grand Island Trail Marathon 2027 Course Analysis

Grand Island Trail Marathon is a full marathon held in Munising, United States of America. It is scheduled for Sunday 25 July 2027. The course is run on trail surface with 0m of total climbing, with its high point near 279m above sea level. For registration and full race details, visit the official Grand Island Trail Marathon website.

Elevation Profile

This is a very flat course, with only 0m of total climbing and little change in altitude throughout. Flat profiles let you hold an even pace from start to finish, which makes this a fast, PB-friendly race.

Expected Race Day Weather

Based on historical weather data for July, the expected race day conditions are as follows. Hot conditions are expected, with temperatures between 18°C and 27°C. Heat is one of the biggest performance factors in distance running - for every degree above 15°C, finish times can slow by roughly 1-2%. Extra hydration and a conservative start are strongly recommended. There is a moderate chance of rain (32%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.

Surface Type: Trail

Grand Island Trail 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 Grand Island Trail Marathon against other marathons to find the right race for your goals.