The Black Hills 100 is a challenging ultramarathon held on the Centennial Trail (Trail #89) in the northern Black Hills of South Dakota. Featuring over 16,000 feet of elevation gain for the 100M event, the race follows an out and back course, beginning and ending in legendary Sturgis, SD. What the Black Hills lack in altitude, they make up for in relentless hills that offer a unique challenge compared to other western ultras.

Course Overview

  • Surface: Dirt, rocks, single-track trail, double-track ATV trail, as little pavement as possible.
  • Course: Centennial Trail (Trail #89) and Deerfield Trail (Trail #40)
  • Elevation Profile: Up. Then down. Then up again. Repeat.
  • Host Town: Sturgis, South Dakota
  • Average Late June Weather: High of 79 degrees, low of 53 degrees, chance of afternoon thunderstorms.

Fun Facts

  • The Centennial Trail was created in 1989 in recognition of South Dakota’s centennial, hence the trail’s name and number. Originally a mixture of single-track trail and old logging roads, over the past 30 years the trail has been rerouted numerous times to create a mostly single-track route. At 111+ miles, it is the longest trail in South Dakota.
  • The top three men and women in the 100 mile race receive a hand painted buffalo skull designed by a local Native American artist. Runners can also earn the special Man/Woman in Black skull by completing each of the four distances we offer (30K, 50K, 50M and 100M). The buffalo skull is also the symbol that appears on Centennial Trail markers and is the inspiration for our race logo.
  • Sturgis, our host town, is home of the world-famous Sturgis Motorcycle Rally, which draws upwards of half a million bikers each August.

Learn about Sturgis, South Dakota


The Black Hills 100 is a challenging ultramarathon held on the Centennial Trail (#89) in the northern Black Hills. Featuring over 16,000 feet of elevation gain for the 100M event, the race follows an out and back course, beginning and ending in legendary Sturgis, SD. What the Black Hills lack in altitude, they make up for in relentlessly rolling hills that offer a unique challenge compared to other western ultras.

Course Overview

  • Surface: Dirt, Rocks, Single track Trail, double track dirt roads, minimal pavement
  • Course: Centennial Trail and Trail 40 (50 & 100 Mile Distance)
  • Elevation Profile: Constant ups and downs
  • Hosting Town: Sturgis, South Dakota
  • Average  Daytime Temperature: High of 79 Degrees.  Low of 53 Degrees

Fun Facts

  • The Centennial #89 trail is named after the 100 Year anniversary (1889-1989) of South Dakota becoming a state.
  • Top 3 100 mile winners receive a hand painted buffalo skull. Additional ways to earn a sacred buffalo skull is to complete all distances offered
  • Sturgis, the host town, is also know for having the most popular Motorcycle Rally on the planet.

Event Media


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Jen Besser

Darren Greasley Niki Worrall🤣🤣🤣

Love this

I’m game!

Vanessa Niemeyer

Rhonda Lee or to Shenandoah 😃

Sharon Leve sounds familiar

Brian Gruender

Go coach

Joey Guttierez

2020 date set yet?

Chad Brower 😂

Holy balls, that was a hot one. Of course, it is quite pleasant today. How’s that for shitty luck? A huge congrats to everyone who toed the line the last two days, and especially to everyone who pushed through the hot, sticky, gross conditions to finish. We’ve had hot weather before, and we’ve had wet weather before, but we’ve never had anything quite like that. A huge thank you to all of our volunteers who were out there at all hours of the day and night making sure you all had everything you needed to battle through. Having good volunteers makes our jobs way easier, and we have the best around.

We’ll get results posted to Ultrasignup later this afternoon. Thank you all for coming, and we hope you enjoyed your self guided foot tour of the Black Hills, despite the swampy conditions!
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Ran the 50K race, great job by the race directors and thanks to the volunteers, you guys were awesome. I had a great time running in the Black Hills. Thanks again from Canada.

GREAT race experience! The aid station crews were AMAZING! Cheering support AMAZING! The course was marked great. No way I would have finished without these. Thank you

I could not be any happier that this is my first 50-miler. Yes, it was tough, but that is exactly what made it so very special to me. Thank you for the wonderful race! Would love to come back in the future to complete other distances. 😉

Thank you for putting on a great event and to all the people who make it possible!!!!

Thank you for a great race!! Thank you so much for all the volunteers!

Beautiful course and awesome volunteers. I thoroughly enjoyed this 100 (plus 5) even despite the heat, hills and humidity 😊 thanks to all who made it happen!

Thanks for all the hard work putting this on, as always it was an unforgettable experience!

Awesome race directors and the volunteers went above and beyond. Thanks for putting on a fantastic event!

Thanks for a great race ... and a huge shout out to the volunteers, most said they were there for the whole race. You guys were a friendly site on the way out and a family on the way back thank you for your smiles and encouragement!

Everyone did an outstanding job putting this race on! From the RD’s to their helpers to all the fantastic volunteers! It looked like a lot of hard work getting the trails ready for us to run on! I absolutely love this race! So beautiful! Thank you to all who had a hand in such an amazing race! ❤️🏃‍♀️

What a great race, as usual. Thanks to everyone for the time and dedication it takes to hold this event. We will be back!!

Thank you for a wonderful event! Your volunteers are excellent and the course markings were perfect.

Super job out there to you and your organization. You all do such a great job!!!

Thanks Chris, and everyone that made this happen! The coffee tasted pretty damn good this morning in that finisher cup. From the comfort of my couch. With my legs up. Under the air conditioning!😁

Thank you for another great year. Thank you to the volunteers. I believe someone left some course markings north of Sheridan Lake.

Great race again and awesome volunteers! THANKS❗❗❗ The only one left for me to do is the 100 mile. Not sure i am tough enough. Lol

Really, really awesome race. Aid stations were great

Thanks again for a wonderful race. You guys are awesome. And the volunteers are priceless. I’ve only ever done this ultra but I can safely say one of the best. And really, thanks for the beer! 😀

Thank you to all the volunteers that made this race a success!! At one aid station one angel put ice in my hydration pack and another other put in the water.

Thanks for a great race. Course was gorgeous! First 50 miler in the books. Barely. 😜

Please keep us updated on the 100mile finisher.

You put on one great event and always a good ass kicking for all involved! I had such a great time and can't wait for next year. Well done!

I can't wait to re run this next year. Love this race!

Thanks for everything. This race is always humbling and this year was no exception. The volunteers, especially at Crooked Tree, were so helpful this year in the heat!

You guys put on a stellar event, and the volunteers are always amazing but seriously took it up a notch this year. It is also classy that you keep the timing clock going past the “cutoff” for folks that are actually finishing to still get a time after a big day!

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Rise and shine 100 milers.  Its race day!

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Good luck! Is there live tracking?

Good luck everyone! U are rock stars!

Have an awesome race 100 milers!!

Go go go!

Have a blast out there everyone!! I love the Black Hills 100!!

Keep on keeping on! You got this!

Good luck to you all and we’ll see you at the finish line!

Good luck all!

Let's knock this out gang! Good luck all!

Good luck every!!

Good luck all, we will see you at packet pickup this afternoon

Good luck!!

Good luck everyone!!!

Crazy people. Much respect.

Corey Turpin this looks ahhhhhmazing.

Heads up on the access to the Woodle Field parking lot and the city park for those headed there tomorrow or Saturday. The main entrance is currently closed due to construction. If you're driving there, you'll need to enter from the west side via Sly St., which is the second left after the Lazelle/Junction intersection. Sly will take you across the creek and then the road will wind around to the right past the park to the Woodle Field parking lot.

This will not impact the race route at all...they have a path cleared for the runners to get through, it's just closed to vehicles.

See ya down there!
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