全部

1·He is a former national race walker.

他是一位前国家竞走队员。

2·If you're really worried about finishing last, choose a short fun run or charity race that's walker-friendly so you know for certain that they'll be walkers in the race.

如果你实在是担心会是最后一个，那就去跑一个短距离的不是太正式的比赛，或者那种接受全程步行的慈善短跑比赛。里面肯定会有走路的人，这样你就能放心了。