> I don't think I could WALK 10 km for ONE day in a row.

I usually walk about two km every day, carrying a quarter of my weight in paper on my back. (hint: I'm still in school)
Walking 10 km is no problem at all, it's less bad than it sounds. Now, running would be a problem, but not walking. I like walking, which is one of the reasons why I'm very happy with the place my family are going this summer: Bavaria, specifically the Alps. There's nothing quite like walking up and down mountains all day for two weeks, except if it's too hot, in which case I couldn't keep it up that long.

Fuzz"who knows somebody who isn't afraid of heights but of mountain tops"pilz