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.

Events nearby

Weekend races on the Mickelson Trail in Deadwood SD including a 26.2 mile marathon, half marathon, relay, 5K with bus transport, and a kids 1K on June 5 to 6 2027.
A multi-distance march and marathon through the Black Hills of South Dakota honoring veterans, with in-person and virtual 26.2-mile options and proceeds to local veterans groups.
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