Being at that elevation, I can see why you would want the O2 with you....There are small cylinders out there. Talk to your doc about this, he or she needs to order them for you...Most times, the doc's office will set up the O2 with a DME company (such as Lincare or whomever is covered by your ins.) Good luck with the ride, it sounds awesome! Jenn <img src="i/expressions/face-icon-small-smile.gif" border="0">