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2026 Sioux Falls Marathon
South Dakota's USATF-certified Boston qualifier along the Big Sioux River, Sep 20, 2026. Rolling-to-flat course with a fast, PR-friendly profile, 6:30 limit, open entry.
In late September, Sioux Falls is bathed in crisp, golden light, making the river greenway and Falls Park—where the Big Sioux tumbles over pink quartzite—a stunning backdrop for your run. After finishing on the track at Howard Wood Field, wander downtown for a farm-to-table meal featuring South Dakota bison or a local craft brew, and take in the city's vibrant autumn energy before the quiet of winter sets in.
Event Details
178m
The route loops through downtown Sioux Falls, Terrace Park and the city's river parks, then runs long stretches along the Big Sioux River greenway. A highlight near the city is Falls Park, where the river drops over pink Sioux quartzite ledges. The finish is on the track at Howard Wood Field.
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