Black Hills 100 - Sturgis, SD

JUN
25-26
2027
Late June ultramarathon on the Centennial Trail near Sturgis offering 100 Mile, 50 Mile, 50 Kilometer and 30 Kilometer courses over rugged single-track terrain.
25-26 Jun 2027
100 miles 50 miles 50 kilometers 30 kilometers

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Black Hills 100

The Black Hills 100 is an ultramarathon held in late June on the Centennial Trail (Trail #89) in the northern Black Hills of South Dakota. The event is hosted in Sturgis and uses mostly single-track trail with sections of double-track ATV trail, dirt and rocky surfaces, and minimal pavement. The 100 Mile course is an out-and-back along the Centennial Trail and includes about 16,779 ft of elevation gain. Other distances are point-to-point and follow sections of the Centennial and Deerfield Trails.

Average late June weather in the area is a high near 79 degrees and a low near 53 degrees, with a chance of afternoon thunderstorms. The Centennial Trail was created in 1989 and extends for more than 111 miles, originally using a mix of single-track and old logging roads and later rerouted to provide mostly single-track terrain.

Event distances available:

  • 100 Mile
  • 50 Mile
  • 50 Kilometer
  • 30 Kilometer

The course profile features repeated ascents and descents, with technical sections of rock and single-track that vary in steepness and surface quality. Visit the organization's website for the most recent information.

100 mi
100 Mile
50 mi
50 Mile
50 km
50 Kilometer
30 km
30 Kilometer

Events nearby

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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.
Early June trail race weekend on the George S. Mickelson Trail near Deadwood, SD, featuring marathon, half, relay, 5K and kids 1K with limited fields.
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