About Yosemite Guide Service

Working for decades as biologists, naturalists, and wilderness instructors in the Sierra Nevada and Yosemite, our guides combine extensive professional knowledge with a friendly, easy going attitude to create extraordinary outings. With inspiring sightseeing tours, day hikes, and distinctive backpacking and adventure camping trips, each trip is individually designed to provide you with an experience you will treasure for years.

Owner John Kleinfelter has spent over 30 years living, working, and exploring in the Sierra Nevada. Simply stated, few others can equal the experience and depth of knowledge John has gained as a biologist and naturalist in the Sierra Nevada. Assisted by life-long friends and colleagues, all associate YGS guides possess a similar expertise and as well, are easy going, extremely considerate and just down-to-earth very friendly people.

A distinctive quality to Yosemite Guide Service is our extensive knowledge and understanding of the natural history and human events that have shaped Yosemite and the surrounding Sierra Nevada. Our extensive insight of the region provides you a very personal experience, accessing the less crowded destinations to create very special trips & outings. By sharing a life-long connection, expertise, and continual discovery of the Sierra Nevada and Yosemite, our goal is to provide you with an increased awareness and appreciation of one of the world’s most beautiful and inspiring places.

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YGS Mission

Yosemite Guide Service was established to provide high quality nature-based outings to the more common and remote wilderness settings utilizing our unmatched knowledge of the Sierra Nevada and Yosemite. Our focus is on the ecosystem and natural environment that makes Yosemite very unique and extraordinary, developed from an unmatched awareness working for many years as biologists and naturalists in the Sierra Nevada. Combined with an extensive knowledge of the fascinating history of Yosemite and surrounding region, a trip with YGS is intended to create a more personal connection to this amazing environment, and to make each guest feel at home in this spectacular landscape, not just an occasional visitor.

Each YGS outing is private and specialized; provided only for the individuals requesting their trip. This is a very unusual style for most guide services. We realize profit can be maximized by adding multiple people to each outing, yet we sacrifice some revenue to make sure you have a very personalized experience. We feel providing you with an exclusive trip is part of our reward, and allows us to focus on sharing our passion and enjoyment for this wonderful place on a very personal level. In a matter of terms, our commitment to you is quality over quantity, and we hope our guests think so, too.

All of our trips are planned and organized upon your request, trying our best to match the dates you want and working with you to create a trip that fits your specific needs and desires. Our goal is to provide the highest quality trip during your visit to Yosemite and the Sierra Nevada, maximizing your vacation time, providing you the best value and unforgettable experience on your trip to Yosemite or exploring the High Sierra wilderness.

By providing individually customized and personalized trips, our focus is centered on delivering exclusive, high quality outings. With great attention to detail and personal service, it is our intent to deliver the most satisfying and personally rewarding outings – just for you and your family, friends, or companions. Just let us know when you’re visiting and what your needs are, and we’ll try our best to make it happen.