YOU SAID:

The man was once behind me, but now he is ahead.

INTO JAPANESE

私の後ろに男だったが、彼が先です。

BACK INTO ENGLISH

Behind me was a man, but he is ahead.

INTO JAPANESE

私の後ろにいた男が、先です。

BACK INTO ENGLISH

A man behind me was away.

INTO JAPANESE

私の後ろに男は離れていた。

BACK INTO ENGLISH

Guy was away in the back of my.

INTO JAPANESE

男はの後ろに離れていた私。

BACK INTO ENGLISH

He's far behind me.

INTO JAPANESE

彼は私の後ろにまでです。

BACK INTO ENGLISH

He is far behind me.

INTO JAPANESE

彼は私の後ろにまでです。

BACK INTO ENGLISH

He is far behind me.