The 2026 event has concluded.
- Sioux Falls Marathon on Aug 25, 2024 cancelled to due excessive heat, half marathon and 5K to continue.
Sioux Falls Marathon
Sioux Falls, SD, USA · September 20, 2026
Race Day Weather
58°at start
62° high
Windy
Dry
Cool and damp, steady winds
Runners will face a cool start at 58°F, rising slightly to 62°F by the finish. Winds from the ENE at 17 mph will create a headwind throughout, adding to the chill. With humidity at 89%, pacing should be conservative, and runners should consider gear choices to stay comfortable.
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Distance: 26.2mi
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FAQ
When is the 2026 Sioux Falls Marathon?
The 2026 Sioux Falls Marathon will be held on Sunday September 20, 2026.
Is the Sioux Falls Marathon a Boston Marathon Qualifier?
Yes, the Sioux Falls Marathon is an official Boston Marathon qualifier.
What is the time limit for the Sioux Falls Marathon?
The time limit for the Sioux Falls Marathon is 6.5 hours.
What will the weather be like for the 2026 Sioux Falls Marathon?
The forecast calls for a high of 62°F and a low of 56°F with a 100% chance of rain.
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