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Rainbow has been fortunate enough to climb, work, and adventure throughout the U.S. and abroad, including alpine Patagonia, the Dolomite spires of Italy, jungles of Venezuela, walls of Mexico, and the absurdly good Canadian granite.  The tremendous diversity and access of adventure and rock to be found around Boulder is what continues to excite him for the climbing and guiding opportunities nearby. Whether high on the Diamond on Long’s Peak or cragging in Eldorado Canyon, Rainbow continues to note that it is just as important who you are climbing with as it is what you are climbing on.


Rainbow worked for the National Outdoor Leadership School (NOLS) for over 12 years and led courses in North and South America in backpacking, climbing, mountaineering, and caving. He also helped start the climbing guide service El Potrero Chico Climbing School and Guide Service based in Mexico. Throughout the year Rainbow also teaches credited ice, rock, and rescue courses for Colorado Mountain College in Leadville, CO. Rainbow is an AMGA certified Rock Guide and has AMGA training in alpine and ice terrain. Rainbow also teaches AMGA Single Pitch Instructor courses for guides in training.  Rainbow is a published adventure photographer- feel free to get excited for your next adventure by viewing some of his images or contact him directly to discuss a guided climb at


“I Learned So Much”

Spent this last week with First Descents and CMS, The Guides, Again, Little Bit, Double, Hans, (Bob Chase, Rainbow Weinstock, Mark Hammond, Andy Hansen) were absolutely amazing. I learned so much from these guys not only about mountain climbing but also about persistence and overcoming obstacles. They are the most professional, talented patient, skilled and fun people that I have met in many years. The guides are just amazing (yes I am repeating myself). As I reflect on an awesome week of climbing in Moab, UT, I keep coming back to what I learned from these guys. They have an absolute love and passion for what they do, and it comes out in the instruction and time and individual attention to each of the students separate skills sets. Everything they showed us was tailored to each student. (Awesome, Awesome, Awesome!) I have always had a love of mountains and after this week I also have a great appreciation of them as well. Thank you SO Much!

- CMS Client (Anonymous)

“The Best in the Business”

- Steven Rosenblum

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