YOU SAID:

I hit the ground running

INTO JAPANESE

私は走って地面を打つ

BACK INTO ENGLISH

I run and hit the ground running

INTO JAPANESE

走って地面を走る

BACK INTO ENGLISH

run on the ground

INTO JAPANESE

頭を上げるな 伏せろ

BACK INTO ENGLISH

On the ground

INTO JAPANESE

頭を上げるな 伏せろ

BACK INTO ENGLISH

On the ground