Sioux Falls Marathon

Sioux Falls Marathon 2026 Course Analysis

Sioux Falls Marathon is a full marathon held in Sioux Falls, United States of America, scheduled for Sunday 20 September 2026. The course is run on road surface with 132m of total elevation gain, reaching a maximum altitude of 462m above sea level. For registration and full race details, visit the official Sioux Falls Marathon website.

Elevation Profile

With 132m of elevation gain, this is a moderately undulating course. The route ranges from 406m to 462m above sea level (56m total range). While not completely flat, the elevation changes are manageable for most runners and shouldn't significantly impact pacing strategy.

Expected Race Day Weather

Based on historical weather data for September, the expected race day conditions are as follows. Moderate temperatures between 11°C and 26°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 (32%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.

Surface Type: Road

Sioux Falls 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 Sioux Falls Marathon?

Our difficulty rating for Sioux Falls 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 Sioux Falls Marathon against other marathons to find the right race for your goals.