Many years ago before I was back into riding a lot we took a family trip (drive) to Breckenridge, CO. I loaded up all our mtb bikes on the Van. Our hotel was at the base of a ski hill. First thing I did was get a bike down and take off straight up the ski hill. Boy was that naive. I gutted it out straight up a very steep grassy patch for about 400 yards until I was gasping. After that I went to more gentle single track and fire road and rail trail type paths. Was I actually thinking I could ride right up the mountain ski runs --to the top?