I've been on Sprycel 100 mg for about 5 months and am CCyR. (Last PCR 0.55). I am considering a backcountry ski trip with some friends in Colorado in about a month. I used to live in Colorado and backcountry skiing was a way of life back then, but that was many years ago and before CML.
The hut where we would be staying is right around 11,000 ft. and we'd be there for two nights. My concern would be in combining a lot of physical exertion at altitude with Sprycel and what the effects on lungs and heart would be. I have mild hypertension (take a med for that) but am otherwise in good shape and exercise pretty regularly, although I would say that since starting Sprycel I've noticed somewhat diminished lung capacity and occasionally get some "funny" chest pains.
Going to ask my docs and maybe have them check me out, but does anyone have experience with this?