Stephen Szoradi, Managing Partner

Stephen began guiding with Aspen Alpine Guides in 2008 after moving from Switzerland where he spent the previous seven years training and working. In the summer, Stephen guides the regional 14,000 ft peaks, day hikes, rock climbs, as well as altitude training. In the winter, he is a backcountry ski guide, snowshoe guide and ski instructor for the Aspen Skiing Company.

Stephen is a Member of Mountain Rescue Aspen (MRA), an Individual Member and Single Pitch Instructor with the American Mountain Guide Association (AMGA) and an Alpine Level I Instructor with the Professional Ski Instructors of America (PSIA). He holds certifications as an Emergency Med Tech (EMT) and a Wilderness First Responder (WFR) and has completed the AIARE Level II course and is a Level I Instructor with the American Institute of Avalanche Research and Education (AIARE). Additionally he serves as a boardmember of the non-profit WeCycle, an Aspen bike share program, and more recently is a trustee on the Colorado Mountain Club State Advisory Board. 



Hillary Seminick, Operations Manager

Hillary grew up paddling, running, and biking in the swamps and rolling hills of northern Florida. In 2006 she moved into a remote cabin in the San Juan mountains of Colorado and decided to make the mountains her forever home. Hillary loves ultra-distance mountain biking and bikepacking, and will be doing the Silk Road Mountain Race, a 1100 mile self-supported bikepacking race, through the Tian Shan range in Kyrgyzstan in 2018. Hillary has had a variety of titles throughout her career; including cartographer, ecologist, city planner, and now, operations manager. She is excited to bring her love of logistics, planning, and staring at maps to Aspen Alpine Guides.


Year-Round Guides

Josh Gross


Josh is an East Coast transplant from the Gunks of New York.  He has been working in the outdoor industry since 1996.  Josh is an AMGA Certified Rock Guide and holds a BA in Outdoor Leadership and Recreation Site Management  from Prescott College.  

In addition to guiding, for years, Josh was employed as a climbing ranger at Rocky Mountain National Park where he performed search and rescue.  Josh has done rigging as a high-angle grip for filming productions such as the Amazing Race and X-Games.  Josh is also an entrepreneur, having owned an interest in two guide services -- Adventure Concepts and Aspen Alpine Guides.

Josh has achieved more than 400 trad and sport first ascents, including adventure routes in the Black Canyon, first summits of desert towers, and beginner-oriented crags at Independence Pass, CO, Lower Sullivan’s Canyon, AZ and Moab, UT.

Josh is a well-traveled climber.  He completed several successful expeditions to the Cirque of Unclimbables, Patagonia, Mexico and Alaska. He has also roped up in Thailand, Turkey, Greece, Italy, Croatia, Slovenia and Spain.

As a CAMP USA athlete, Josh has enjoyed leading clinics and testing products since 2007.  

While a dedicated climber, Josh also enjoys guiding skiing, especially multi-day hut trips. Josh has an intimate knowledge of the 10th Mountain Division Huts Association’s system, having worked as a hut keeper.  

Fortunate to have discovered climbing in his youth, Josh now donates time to the climbing community.  He re-bolts climbs with support from the American Safe Climbing Association and served on the board of the Friends of Indian Creek.


Joda Hankins

Joda cut his teeth in the outdoor world while learning to climb the steep walls of The Gunks in NY. After completing his B.A. in English and Leadership, he spent three seasons climbing and teaching mountain safety in the Ladakh Range of Northern India. Joda has guided in India, Japan, Alaska, Washington, and throughout the Western U.S. He is a Wilderness First Responder, Leave No Trace Educator, holds an AIARE level II certification, and has completed AMGA course work in the following: Rock Guide, Ice Instructor, Ski Guide, Alpine Guide and Advanced Rock Guide.


Curt Hepler

Curt's rock climbing career began in the Midwest almost 20 years ago, where he grew up climbing the Quartzite rock cliffs of Devils Lake, Wisconsin. His passion for the mountains led him to Colorado where he enjoys sharing his knowledge of climbing and the outdoors with others.  He is a current AMGA member with a SPI certification.

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Sarah MacGregor

Raised in Colorado, Sarah has been exploring the wilderness in different ways her whole life. Through rock climbing, backpacking, backcountry snowboarding and skiing and mountaineering, she’s learned that being challenged and sometimes uncomfortable inspires the most personal growth. She loves to share the teachings that the mountains have shared with her, and after a lifetime of exploration she has yet to find a better classroom than our backyard here in Colorado. Since 2008, she has been climbing, teaching and guiding various wilderness sports and subjects. Her certifications and courses include: AMGA Apprentice Rock Guide, AMGA Single Pitch Instructor, Wilderness First Responder, Avalanche Level One, and 400+ hours of Yoga Teacher certifications and trainings.

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Nate Rowland

Nathan grew up in Washington State where the volcanoes of the Cascade Range were his playground and mentor.  Settling in Colorado in 2000, Nathan has adopted the Elk Mountains as his new home and office.  He has had many successful expeditions spanning the globe in such locations as the Tien Shan of Kyrgyzstan, Patagonia, the Andes, the Aleutian Islands, the Tordrillos, the Chugach, and the Southern Alps of New Zealand.  Nathan is a member of Mountain Rescue Aspen (MRA), an Emergency Medical Technician (EMT), Remote Emergency Medical Technician (REMT), Medical Care Person in Charge (MCPIC), and has completed the AIARE Level II avalanche course.


Mike Schneiter


Mike is a dedicated climber with more than 250 first ascents to his name. When he isn't teaching students at Glenwood High School, he instructs rock and ice climbing, canyoneering, mountaineering, and climbing self rescue courses at Colorado Mountain College, in addition to wilderness medicine courses with Desert Mountain Medicine. He has been a certified AMGA Rock Guide since 2003, and has completed the AMGA Rock Guide Course, Alpine Guide Course and Ice Instructor Course.  Mike is also AIARE Level I & II certified and is a Leave No Trace Master Educator.


Jordan White


Jordan grew up playing in the mountains right here in Colorado. He got his first start climbing mountains at age five when he summited his first fourtneener. Since then he has put his time in learning the tricks and trades of the outdoor world. In summer, Jordan spends his as much time as possible in the high alpine with either his rock shoes or hiking boots on. In winter, it is hard to find a day when his feet aren't crammed into ski boots for some adventure or another.  In 2009 Jordan became the youngest and the 5th person to ski from the summit of all 54 of Colorado's 14,000 foot peaks. Jordan also guides for Ski Arpa, catskiing down in Chile and is a member of Mountain Rescue Aspen.


Riley Soderquist

Riley grew up in Minnesota where he spent a lot of time in the Boundary Waters and skiing the small hills Minnesota has to offer. He moved to Colorado in 2009 and quickly fell in love with the Rocky Mountains. He has been on expeditions in mountain ranges all over the world including the Alaska range and the Andes. In addition to working as a guide, Riley is also a current member of Mountain Rescue Aspen (MRA) and has completed the AMGA alpine skills course and AIARE level II avalanche course.


Seasonal Guides


  • Andrea Tupy
  • Anton Sponar
  • Brian Marsh - AMGA SPI
  • Buzz Patton
  • Carl Kishbaugh
  • Colter Hinchliffe - AMGA SPI
  • Dan Hohl
  • Elisabeth White
  • Evan Clapper - AMGA SPI
  • Jamie Caudill - AMGA SPI
  • Lauren Bullard
  • Lynn Sanson - AMGA SPI
  • Pete Van Deventer
  • Richard Rosenfield
  • Ted Mahon
  • Tim Shortell
  • Trey Barnes

Special Resources

  • Mark Falender - IFMGA/UIAGM Rock Climbing, Alpine, Ski Mountaineering Guide
  • John MacKinnon - AMGA Rock Climbing, Ski Mountaineering Guide
  • Eric Whelwell - IFMGA/UIAGM Rock Climbing, Alpine, Ski Mountaineering Guide

Avalanche Education

  • Mark Falender - AIARE Level I & II Course Leader, AAA Certified Instructor
  • Deb Kelly - AIARE Level I Course Leader & Level II Instructor
  • Evan Clapper - AIARE Level I Instructor
  • John MacKinnon - AIARE Level I & II Course Leader
  • Scott Messina - AIARE Level I & II Course Leader
  • Stephen Szoradi - AIARE Level I Course Instructor
  • Pete Van Deventer - AIARE Level I Course Instructor

Guiding Principles

  • We at Aspen Alpine Guides strive to provide a model for an individual-focused guide service that continues to maintain safety, leadership and passion for the outdoors.
  • Our commitment to providing outstanding guides ensures that our guides are able to work towards their goals and create memorable experiences.
  • We are committed to being a resource to the community by sharing our passion for teaching and education.
  • We foster a mutual respect and appreciation for environmental stewardship and healthy lifestyles.
  • We continue to commit to our guests’ goals by guiding with integrity, authenticity and passion. Above all, we value the relationships we have built with our guests and each other.
  • We practice principles that will help our community maintain its mountain lifestyle, so we all can enjoy the beautiful mountains for years to come.

Note: Our guiding principles were created in the Spring of 2013 in a collaborative process by the guides from Aspen Alpine Guides.