Our Guides

  • AMGA Certified Guides
  • All Gear Included
  • Adventure of a Lifetime

Jeff Llewellyn

Jeff Llewellyn | Co-Owner

Jeff began climbing at a gym in his home state of Indiana. Soon after cutting his teeth climbing outside at the Red River Gorge in Kentucky he packed up and moved to Boulder, Colorado. Since then, he has taken up traditional climbing, earned a degree in Outdoor Recreation Leadership from Colorado Mountain College, and gone on to become a guide for Sylvan Rocks starting in 2014.

After the 2016 season with Sylvan Rocks, Jeff went back to the Front Range of Colorado and became the Director of Guiding and Development for Evo Mountain Guides in Louisville. Now, he finds himself back in the Black Hills again, guiding and managing Sylvan Rocks.

When he’s not playing on rocks, Jeff enjoys travelling and hiking with his fiance Mykel and their puppy, Sanchito. Otherwise he spends his time biking, snowboarding, and kicking around a futbol.


AMGA Single Pitch Instructor
Wilderness First Responder
CPR / First Aid

5 stars

I can’t say enough good things about Jeff and Brandon and the awesome experience I had climbing in Custer State Park! I learned so many cool new skills, achieved new goals, had great conversation, and felt super safe the whole time. Jeff also went out of his way to spend a couple additional hours with me to talk through all the cool things to do in Custer during my visit. Not to mention, he and Brandon have pinspired me to pursue van life part-time, and they have been providing me with helpful tips throughout my van search. Who would have thought so much could be achieved in one day? I highly recommend a visit to climb with them!


5 stars

Wife and I did a 6 hour with Brandon. We’d both climbed indoors a bunch, but we’d never done the real thing. We managed to hit 4 very different routes by Sylvan Lake. Brandon was knowledgeable, safe, and generally a great time. I loved every minute of it.


5 stars

We had such an amazing time! Brandon was our guide and he was incredibly knowledgeable, helpful, and personable! My husband and I went for the 6 hr climb package and it was everything that we hoped it would be! We were challenged and exhilarated, yet felt very safe the entire time! We are novice climbers and Brandon invested the time to teach us basic climbing skills-which we greatly appreciated. He was amazing at gauging our comfort level and providing us with climbs that were a great fit for us with amazing views! We can’t say enough great things about Brandon at Sylvan Rocks and we can’t wait to bring our kids back to experience the challenge and fun that climbing provides! This package is an amazing value for the investment! Climb on! : ).


American Mountain Guides Association

The Highest Standards

Accredited by the American Mountain Guides Association

As the only AMGA Accredited Guide Service in the area, we are committed to a high standard of climbing professionalism. The AMGA is an internationally recognized association offering courses, exams and certifications designed to certify guides and instructors as well as accredit businesses.

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Our Friends

  • South Dakota Outdoor Shop
  • Black Hills Basecamp
  • Custer Chamber of Commerce
  • Granite Sports
  • Black Hills Climbers Coalition

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