I sent the link to a friend of mine that has developed a cycling addiction. He and I may be up for this one too. I may also be up for trying the 50, but right now a lot depends on getting back some use of my right arm (long story). Hard to ride a bike when you can't extend your right arm. Also hard - brushing my teeth, shifting gears in my car, shaking hands, and changing car radio station. Just a little FYI.