Black Hills 100 - Sturgis, SD

JUN
25-26
2027
Multi-distance ultramarathon on the Centennial Trail in Sturgis, South Dakota, with 100 mile, 50 mile, 50 km and 30 km over rugged single track terrain.
25-26 Jun 2027
100 miles 50 miles 50 kilometers 30 kilometers

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About the race

The Black Hills 100 is an ultramarathon event held June 25-26, 2027, on the Centennial Trail (Trail #89) and Deerfield Trail (Trail #40) in the northern Black Hills of South Dakota. The event offers multiple distances over mostly single-track and old logging roads, with rocky and dirt surfaces and minimal pavement. The terrain features repeated climbs and descents rather than sustained altitude, producing substantial cumulative elevation gain on each route.

Average late June conditions are listed as a high near 79 degrees and a low near 53 degrees, with a chance of afternoon thunderstorms. The Centennial Trail was created in 1989 for South Dakota’s centennial and is noted as a 111+ mile route that has been rerouted over time to increase single-track sections.

Finish awards for the 100 mile top three men and women are hand painted buffalo skulls by a local Native American artist. A special Man/Woman in Black skull is awarded to those who complete all four offered distances.

Event distances include: Visit the organization's website for the most recent information.

  • 100 Mile - out and back on the Centennial Trail; 16,779 ft elevation gain.
  • 50 Mile - point to point Silver City to Sturgis; gain 8,656 ft.
  • 50 Kilometer - point to point Dalton Lake to Sturgis; gain 3,800 ft.
  • 30 Kilometer - point to point Runkle Road to Sturgis; gain 3,381 ft.
100 mi
100 Mile
50 mi
50 Mile
50 km
50 Kilometer
30 km
30 Kilometer

Events nearby

Backyard ultra on Big Hill trails near Spearfish SD where runners repeat 4.167 mile loops each hour until one runner completes one more loop than the rest.
A weekend of march and marathon events on the Mickelson Trail near Deadwood honoring veterans, with distances from 16 to 110 miles, team and individual formats, military divisions, and rest stops every 3 to 5 miles.
Final race of the 2026 Black Hills Runners Club Trail Series at Alkali Trailhead in Sturgis, SD, with 10K and 18K courses through rolling hills and pine singletrack; youth entries are listed as free.
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