TrekSierra | Yosemite & Mammoth Lakes Premium Backpacking Guide Service All Inclusive
TrekSierra aims to help others experience the breathtaking backcountry in the most supported way possible! Our goal is to provide a unique, premium backcountry experience that allows us to reconnect with nature, our loved ones and ourselves!
We believe that the journey into the wilderness should be both inspiring and accessible, whether you’re a seasoned adventurer or exploring the backcountry for the first time. By blending expert guidance with personalized service, TrekSierra ensures that every trip is safe, memorable, and tailored to your needs, creating lasting connections with the natural world.





TrekSierra aims to help others experience the breathtaking backcountry in the most supported way possible! Our goal is to provide a unique, premium backcountry experience that allows us to reconnect with nature, our loved ones and ourselves!







Humans have relied on llamas for over 4,000 years as efficient, low-impact pack animals for backcountry travel, valued for their sure-footedness, endurance, and minimal environmental impact! In fact- an average horse or mule is equal to 18 llamas in regard to trail impact. Not only are they calm and easy to manage, but a pair of llamas can carry 150lbs of your group’s gear, allowing for many luxuries you would not consider bringing into the backcountry otherwise! Llamas truly make the best trail companions.
TrekSierra offers themed hikes to make your trip even more memorable! This is a unique service designed to enhance your trek but never to “crowd” your trek.
TrekSierra is partnered with some of the most durable and reliable outdoor brands on the market, including Ultralight rental offerings from Nemo, Gregory, Osprey, Big Agnes, Mammut, Mountain Hardware, MSR and Outdoor Research.







At TrekSierra, enjoy your time in the outdoors and leave camp set up to your guide!
We live inside our amazing nature! Our guides are AMGA trained, local professionals
We offer llama supported treks to make each trip the most unique, comfortable and memorable!
Every trip booked with TrekSierra will be a private trip- your group only!
Get off the beaten path and discover hidden gem locations with our tours. Our excursions will bring you to the best waterfalls in the area!
We are located in Mammoth Lakes, CA and offer guided locations from Lone Pine to Yosemite!
To walk in nature is to witness a thousand miracles.
- Mary Davis