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Image for RMI Expeditions Founder, Lou Whittaker

RMI Expeditions Founder, Lou Whittaker

With a heavy heart the RMI family announces the passing of our founder, Lou Whittaker
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2025 Mt. Rainier Interest List

Sign-up to receive more information on climbing Mt. Rainier in 2025.
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Mt. Baker's Easton Glacier

Make your summit attempt on this North Cascades classic!
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Mt. Baker or Mt. Rainier?

Discover which mountain is right for you as you begin your mountaineering journey.
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Gokyo Trek

Experience the Khumbu region and the serene alpine village of Gokyo!
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RMI Blog

Check out the blog to follow all our climbs - Denali, Mt. Rainier, and more!
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Our Philosophy

Getting safely up and down mountains is just the beginning of the story at Rainier Mountaineering, Inc. (RMI). Founded by the legendary Lou Whittaker and staffed by the most talented and accomplished guides in America, RMI boasts a five-decade legacy of safe, successful, and unforgettable mountaineering adventures.

Experience matters in the mountains, and that is exactly what we have gained over the last 55 years. From years of expedition guiding across the globe, including pioneering explorations into the remote Himalayas, to over 300 successful Denali Expeditions and 80,000 climbers on Mt. Rainier, our resume speaks for itself. This depth of experience is a testament to our unwavering dedication to mountain excellence and a legacy we continue to build with each new adventure we embark on.

Find Your Adventure

7 continents, 37 different programs, an experience of a lifetime.

Why RMI?

Guides

Get to know RMI's world class guides.

Responsible Climbing

We are actively committed to climbing responsibly.

About RMI

We're there for you every step of the journey.

History

Experience matters.

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