Groundhog Day Marathon
Grand Rapids, United States of America · Saturday 23 May 2026
RoadFull Marathon
Running the Groundhog Day Marathon in May means you'll spend 42 kilometers rolling through the relatively gentle terrain of West Michigan, where the elevation barely whispers rather than shouts. The course sits between 180 and 195 meters above sea level, which means what feels flat one moment will present a subtle rise the next, nothing dramatic but present enough that your quads notice by kilometer 25. The road surface is straightforward asphalt throughout, the kind of consistent running surface that lets you settle into rhythm without worrying about loose gravel or sudden transitions. Spring in Grand Rapids brings an unpredictable climate, so you'll want to be ready for anything from cool mornings to warmer afternoons as May approaches summer. The city's infrastructure for road racing is solid, with decent road conditions and the kind of Midwestern sensibility that means aid stations will be well-organized and volunteers genuinely encouraging. What you'll actually experience is a lot of suburban and semi-rural Grand Rapids, moving through neighborhoods and corridors that reveal how this region sits at the intersection of development and farmland. The gently rolling nature of the terrain means you're never climbing something that breaks you, but those small undulations add up mentally and physically by the second half of the race. You'll notice the green of May in Michigan, trees fully leafed out and grass thick, which provides some visual relief even when fatigue sets in around kilometer 30. The flatness you might expect from this part of the country is honest but deceptive, there's enough roll to keep things interesting without ever becoming brutal. By the time you're approaching the finish, your legs will have worked harder than the elevation profile suggests, thanks to those persistent small hills that individually seem minor but collectively demand respect.
Difficulty Calculator
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:m
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Adjusted Time
3:52:52
Time difference: -7.1 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain0m
Elevation High195m
Elevation Low180m
Weather Forecast
High18°C
Low13°C
Chance of Rain47%
Groundhog Day Marathon 2026 Course Analysis
Groundhog Day Marathon is a full marathon held in Grand Rapids, United States of America, scheduled for Saturday 23 May 2026. The course is run on road surface with 0m of total elevation gain, reaching a maximum altitude of 195m above sea level.
Elevation Profile
This is a very flat course with only 0m of total elevation gain across the full distance. The course ranges from 180m to 195m above sea level — a 15m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.
Expected Race Day Weather
Based on historical weather data for May, the expected race day conditions are as follows. Moderate temperatures between 13°C and 18°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance over the full distance. There is a moderate chance of rain (47%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.
Surface Type: Road
Groundhog Day Marathon is run on road surfaces, which provide the fastest and most predictable conditions for marathon running. Road courses allow for consistent pacing and are typically the best choice for runners targeting a personal best time.
How Difficult Is Groundhog Day Marathon?
Our difficulty rating for Groundhog Day Marathon is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.
Looking for an easier marathon or a tougher challenge? You can also compare Groundhog Day Marathon against other marathons to find the right race for your goals.
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