TF, you allude to something that I don't think a lot of folks (not necessarily here, but in the "real" world) realize:
Often, wanting to have or wanting to do is a whole lot better than actually having or doing.
How many people yearn to take a vacation only to feel like they need a vacation when they get back??? Suddenly, a vacation isn't all that it is cracked up to be.
Walking that distance might sound romantic, cool, and adventurous. It might be a way of proving to ourselves that we are still young, strong, capable, and are not your average couch potato. Yet, when the rubber hits the road, how many would really do it, through rain, snow, heat, freezing temps, times when you're sick, tired, hurt, hungry, etc.? Though you didn't mention them in your first post, they are certainly things one needs to consider before answering your question.