Word: 马拉松 (mǎlāsōng)

参加马拉松前要好好休息。

Cānjiā mǎlāsōng qián yào hǎohǎo xiūxi.

You should rest well before taking part in a marathon.

我弟弟下个月要跑马拉松。

Wǒ dìdi xiàgeyuè yào pǎo mǎlāsōng.

My younger brother is going to run a marathon next month.

跑完马拉松，他已经精疲力竭了。

Pǎo wán mǎlāsōng, tā yǐjīng jīngpílìjié le.

After finishing the marathon, he was completely exhausted.