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Actually I don't know how to calculate FCNs for runners. You decide. I don't care. My aim here is to promote a sociable and competitive attitude among commuters-by-foot. To the guy with the jangly keys who chased me for a kilometer tonight, eventually passed when I went through the tunnel while you went over, then gave up: thanks for the race. I totally had your ass. But how did you manage that overtaking manoeuvre? Were you skipping over the bonnets of cars up there?