
Nauvoo, United States of America · Saturday 25 April 2026
This race suits runners who want a honest, no-frills marathon experience without the distraction of significant elevation changes. If you're training for a faster time or building fitness before tackling a hillier course, the flat to gently rolling terrain gives you the conditions to run your own race. It's also welcoming to those making their first marathon attempt, since you won't spend energy fighting mountains. That said, the flatness means there's nowhere to hide, so you'll need genuine aerobic fitness rather than relying on downhill sections to carry you through. What you'll encounter is a straightforward road course through Nauvoo, a historic area in Illinois with quiet stretches and small-town character. The lack of elevation gain is the defining feature here, which sounds like a gift until mile 18 or so when the mental game kicks in and you're still running on the same plane you started on. Wind exposure could be a factor depending on conditions, since flat courses offer little shelter. There's also the reality that a completely flat marathon feels longer psychologically than a hilly one, even though your legs might thank you come the finish line. The course is road-based, so expect pavement the whole way and plan your nutrition strategy accordingly, as aid stations need to do their job on terrain without natural recovery valleys.
Adjusted Time
3:50:22
Time difference: -9.6 minutes compared to a flat, road, temperate course.
Nauvoo Marathon is a full marathon held in Nauvoo, United States of America, scheduled for Saturday 25 April 2026. The course is run on road surface with 0m of total elevation gain, reaching a maximum altitude of 0m above sea level.
This is a very flat course with only 0m of total elevation gain across the full distance. The course ranges from 0m to 0m above sea level — a 0m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.
Based on historical weather data for April, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 8°C to 17°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a low chance of rain (11%), so dry conditions are likely.
Nauvoo 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.
Our difficulty rating for Nauvoo 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 Nauvoo Marathon against other marathons to find the right race for your goals.
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