https://fitz.hk/sports/hiking/%e6%a8%82%e6%96%bd%e6%af%85%e8%a1%8c%e8%80%85-%e9%9b%99%e5%9d%b3%e7%b7%b4%e7%bf%92-%e8%a8%88%e7%ae%97100%e5%85%ac%e9%87%8c%e5%ae%8c%e6%88%90%e6%99%82%e9%96%93%e7%9a%84%e5%82%b3%e8%aa%aa/
[樂施毅行者] 雙坳練習 計算100公里完成時間的傳說