Charting the World’s Easiest—And Most Punishing—Marathon Routes

November’s New York City Marathon is a little bit Jekyll-and-Hyde, combining benevolent descents with sinister climbs; the equally prestigious Boston course gifts a runner with merciful downhills. And if the there-and-back Whiskey Row race in Arizona looks too hellish, head to Berlin.

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from WIRED » Science http://feeds.wired.com/c/35185/f/661470/s/400d4945/sc/13/l/0L0Swired0N0C20A140C110Cmarathon0Eroute0Eelevation0C/story01.htm

via Science News