Last Saturday I camped at 11,000 ft. before climbing Mt. Charleston at 11, 930 ft. But as I said in a reply above, I'm 66 and I guess I don't have probably 1/2 the aerobic ability I had at 38 when I did the Canadian Ski Marathon. (XC skiing 100 miles in two days.)

Eric
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"There are no comfortable backpacks. Some are just less uncomfortable than others."