Guides Page

Guides Page

Yosemite National Park guides have decades of experience to lend to your adventure. Yosemite Mountaineering School guides are your ticket to exploring the park's backcountry. We offer rock climbing, hiking, and backpacking during the warmer months and backcountry ski tours in the winter.  Meet some of our guides below. 

Yosemite Mountaineering School and Guide Service

Dave Bengston

YMS Director, guide since 1985. AMGA Rock Certified Guide. Leave No Trace Master Certified. Extensive skiing and alpine climbing experience. Big wall guide with 48 ascents of El Capitan, many speed records. Numerous first ascents in Yosemite Valley, Tuolumne Meadows, and Joshua Tree, up to 5.13 and including Kaos, El Capitan. BS Physics.

 Bradley Gasawski

YMS Assistant Manager. Bradley is a PSIA certified Alpine and Telemark Ski Instructor. He has taught ski classes and led hikes and backpack trips in the Adirondack Mtns and the Sierra Nevada Mtns.  He has an M.S. in Recreation Administration. He is AIARE Level I Avalanche certified. Bradley enjoys teaching people new things and sharing his passion for the outdoors with others.

 Climbing Guides

Bill Russell YMS climbing guide since 1993; began guiding in 1983. Veteran of Yosemite big wall first ascents, desert towers and many alpine ascents. Guides in Red Rocks, NV during the winter. Previous Yosemite Search and Rescue Team member. Previous Professional Ski Patrol member.
Scott Stowe YMS climbing guide since 1995. Part of the "Dream Team" speed wall climbers. Over 70 ascents of El Capitan, including 2 first ascents; Reticent Wall & Every Man For Himself. Climbing since 1984. 
Kevin Sesler YMS climbing guide since 1997. More than 15 El Cap ascents. Active in Yosemite Search and Rescue. Extensive free climbing in the US, Europe, Mexico and Asia. Spanish speaker. Leave No Trace Trainer Certified. Guides in Red Rocks, NV during the winter. BS Resource Management
  Josh Helling   YMS climbing guide since 1993. AMGA certified Rock Guide. Accomplished free climber. More than 17 ascents of El Capitan and many alpine ascents. 2 successful Baffin Island alpine big wall expeditions. PSIA certified cross-country instructor and backcountry ski guide during the winter. Professional photographer, videographer, and film rigger. AMGA Certified Rock Guide.
Jeff Scheuerell YMS climbing guide since 2001. Extensive Yosemite climbing experience, with 30 first ascents. Has been climbing since 1985. 22 years climbing experience. Guided caving in Sequoia National Park for 5 years prior to joining YMS. Wilderness First Responder. BS Resource Recreation, with minor in Outdoor Leadership.
Constantine Severis  YMS climbing guide since 2003. AMGA Certified Rock Guide. Ski patroller in CO in winter. Has guided in Telluride, CO, Red Rocks, NV and Mt. McKinley in AK. Guided a sucessful ascent of Mt. Everest.
Hope Wolf  YMS climbing guide since 2003. APP Certified Ski Patroller. Wilderness EMT certified. Sonora Pass Highway climbing guidebook author. Climbing since 1980. Leave No Trace Trainer Certified. 
Jo Whitford   Has lived and climbed in Yosemite for over 25 yrs. Extensive climbing experience in Europe, Canada, Australia, and the United States on virtually all types of rock. In 1999 after a daring rescue she was cited with The Citizens Award for Bravery.
Chris Ecklund   YMS climbing guide since 2005. Rock and alpine guiding in the Sierra Nevada since 1998. AMGA certified Rock Guide. 

 Dave Lane

YMS guide since 2006. AMGA Certified Rock Guide. Climbing for 16 years with 6 El Cap ascents, first ascents in the High Sierra and Deserts of the Southern California. AIARE Avalanche instructor. Climbed in Spain, Mexico and Greece.

 Nate Kerr

YMS climbing guide since 2007. AMGA Certified Rock Guide. Former Pacific Crest Outward Bound School Instructor, avid climber and backcountry skier, pursuing further AMGA certification. Yosemite Cross-Country ski guide,

 Doug Nidever

 YMS Guide since 1984. IFMGA certified guide. Started climbing in 1968. Multiple ascents of Yosemite's big walls and extensive Tuolumne experience. Alpine Guide and Ski Guide on the Eastern High Sierra during the winter. Father of Tobin and Layton. Owner of Nidever Mountain Guides.

 Hiking Guides

Joe Link   Hiking and backpacking guide since 2004. Former Search and Rescue team member. Wilderness First Responder certified. Leave No Trace Trainer Certified.

 Jean Redle

 Hiking and backpacking guide since 2005. Former Search and Rescue team member. Led Junior Ranger and Climbing programs in Tuolumne. Wilderness First Responder certified. Certified Leave No Trace Trainer.

Adam Gustaveson  A Yosemite local for more than 6 years, Adam knows the secret Yosemite places, and has a keen eye for spotting wildlife.  If you want to make his day, though, just ask him how the fishing has been.  YMS guide since 2006.  Leave No Trace Trainer Certified.

 Josh McClure

 YMS hiking and backpacking guide since 2006, extensive climbing, hiking and backpacking experience at National and International destinations, including the Himalayas. BS Natural Resources Management. Certified Interpretive Guide.

Anna Landauer

 Anna fell in love with Yosemite as a child growing up in the San Francisco Bay Area. With over 20 years experience hiking, backpacking and exploring the Sierra wilderness, she is passionate about her role as an outdoor educator and guide. Anna delights in providing guidance to inspire enjoyment and stewardship of the natural world. Anna has a Bachelor’s degree in Outdoor Education, and a Master’s in Traditional Chinese Medicine. She loves to travel and practice her Spanish.

 George Ridgley

30 years hiking, climbing, and backpacking in Yosemite

 Cross Country Ski Guides

 Rick Stockwell 

 PSIA certified Nordic ski instructor and Yosemite Cross Country ski guide. XC and Mountain School guide since 1980. Backcountry skiing, hiking and backpacking guide and expert snow camping and survival instructor.

 Nancy Shenton

 PSIA certified Nordic ski instructor and Yosemite Cross Country ski guide since 1997. Leave No Trace trained.

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“We try to eat at the Mountain Room everytime we visit Yosemite. My son has Celiac Disease and in the past The Mountain Room has always been very accommodating. This time when I asked if a particular item was gluten-free, they presented a gluten-free menu. IN THE MIDDLE OF YOSEMITE!!! I can't tell you how great that is. It can be so difficult for my son to have a nice meal like everyone else, and there were a ton of delicious options on your gluten-free menu. Thank you, thank you, thank you.

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