YOU SAID:

sand is very hot on my feet what i run with

INTO JAPANESE

砂は私の足で非常に熱く、私が走っているもの

BACK INTO ENGLISH

The sand is so hot on my feet what I'm running

INTO JAPANESE

走っている足元の砂はとても熱い

BACK INTO ENGLISH

The sand under my feet is so hot

INTO JAPANESE

足元の砂が熱い

BACK INTO ENGLISH

the sand under my feet is hot

INTO JAPANESE

足元の砂が熱い

BACK INTO ENGLISH

the sand under my feet is hot