琴日完左馬拉松醒起, 請問其實半馬即係幾多公里? 係咪21公里?
By Ling Cheung (pupil) on 2012-02-06 Answers 1 Views 561
By stephcheng (middle-school student) on 2012-02-06
馬拉松是42公里, 半馬即21公里