Marathons in South Dakota

South Dakota is home to 5 marathons in our database in United States, spread across cities including Brookings, Deadwood, Hill City, and Sioux Falls, and more. Sioux Falls Marathon is the largest race in the lineup, typically drawing around 404 finishers, while the full spread offers everything from fast urban courses to scenic regional events. Browse the races below for course maps, elevation profiles, typical weather, and practical race-day detail to help you choose your next start line. Plan by month on our marathon calendar or filter by country and region.

Brookings, South Dakota, United States

Brookings Marathon

The Brookings Marathon draws approximately 89 finishers each September on an urban road in Brookings, United States. Brookings' certified marathon serves eastern South Dakota runners on a flat prairie-city loop. The course tours Brookings neighborhoods, university-area roads, and eastern prairie connectors. Gentle undulations are the only breaks on an otherwise flat profile.

Next race: Sunday, 6 September 2026

Deadwood, South Dakota, United States

Deadwood-Mickelson Trail Marathon

The Deadwood-Mickelson Trail Marathon draws approximately 238 finishers each June on a scenic trail road in Deadwood, United States. South Dakota's largest running event by participation finishes in the historic landmark town of Deadwood. The course follows the crushed-limestone Mickelson Trail through Black Hills forests, creeks, and mining-country scenery. Expect significant climbs on this hilly course.

Next race: Sunday, 6 June 2027

Spearfish, South Dakota, United States

Leading Ladies Marathon

The Leading Ladies Marathon draws approximately 125 finishers each June on a scenic road in Spearfish, United States. Spearfish's Leading Ladies Marathon is a popular June Black Hills race with a rolling scenic course. The course follows Spearfish Canyon connectors and northern Black Hills scenic roads. Rolling terrain with moderate climbs shapes the middle miles.

Next race: Sunday, 6 June 2027

Hill City, South Dakota, United States

Run Crazy Horse Marathon

The Run Crazy Horse Marathon draws approximately 135 finishers each October on a scenic road in Hill City, United States. The Black Hills marathon near Crazy Horse Memorial draws runners to Hill City each October. The course tours Black Hills roads with granite peaks, forest corridors, and Crazy Horse Memorial vistas. Expect significant climbs on this hilly course.

Next race: Sunday, 4 October 2026

Sioux Falls, South Dakota, United States

Sioux Falls Marathon

The Sioux Falls Marathon draws approximately 404 finishers each September on an urban road in Sioux Falls, United States. South Dakota's largest city marathon draws more than 400 finishers on a flat certified Boston-qualifier course. The course tours Sioux Falls parks, riverfront trails, and city neighborhoods on a mostly flat loop. Gentle undulations are the only breaks on an otherwise flat profile.

Next race: Sunday, 6 September 2026

Nearby Marathons

Other races closest to South Dakota.

Bismarck, North Dakota, United States· 298 km away

Bismarck Marathon

The Bismarck Marathon draws approximately 206 finishers each September on an urban road in Bismarck, United States. North Dakota's longest-running marathon draws runners from across the Midwest to the capital region each September. The course tours Missouri River trails, state capital neighborhoods, and Bismarck–Mandan riverfront roads. Rolling terrain with moderate climbs shapes the middle miles.

Next race: Sunday, 6 September 2026

Fargo, North Dakota, United States· 445 km away

Fargo Marathon

The Fargo Marathon draws about 2,500 finishers each May through North Dakota's largest city on the flat Red River valley. The course passes the Fargodome, the historic downtown, and the Red River with community celebrations at every mile. May spring weather on the northern plains and a flat, friendly course make it one of the most beloved regional marathons in the American Midwest.

Next race: Sunday, 16 May 2027

Casper, Wyoming, United States· 456 km away

Casper Marathon

The Casper Marathon draws approximately 89 finishers each June on a scenic road in Casper, United States. Wyoming's fast-growing Casper Marathon is a USATF-certified Boston qualifier in the heart of the state. The course follows Casper river trails, prairie roads, and wide-open Wyoming vistas. Gentle undulations are the only breaks on an otherwise flat profile.

Next race: Sunday, 6 June 2027

Williston, North Dakota, United States· 492 km away

Williston Marathon

The Williston Marathon draws approximately 10 finishers each October on a scenic road in Williston, United States. Northwest North Dakota's established marathon serves the Williston running community on a flat prairie loop. The course runs through Williston neighborhoods and northwestern prairie roads. Gentle undulations are the only breaks on an otherwise flat profile.

Next race: Sunday, 4 October 2026

Laramie, Wyoming, United States· 493 km away

Med Bow Rail Marathon

The Med Bow Rail Marathon draws approximately 45 finishers each May on a scenic trail road in Laramie, United States. Laramie's Med Bow Rail Marathon uses a rail-trail corridor through southeastern Wyoming's high country. The course follows the Medicine Bow Rail Trail through high-plains and mountain-foothill scenery. Rolling terrain with moderate climbs shapes the middle miles.

Next race: Sunday, 2 May 2027