https://fitz.hk/sports/running/%e5%88%b079%e6%ad%b2%e6%99%82_%e4%bd%a0%e6%9c%83%e5%ae%8c%e8%b5%b0%e7%ac%ac%e5%b9%be%e9%9a%bb%e9%a6%ac%e6%8b%89%e6%9d%be/
到79歲時,你會完走第幾隻馬拉松?