YOU SAID:

i want to get a horse and ride it

INTO JAPANESE

馬に乗って乗りたい

BACK INTO ENGLISH

I want to ride a horse

INTO JAPANESE

乗馬がしたい。

BACK INTO ENGLISH

I want to go horseback riding.

INTO JAPANESE

乗馬がしたい。

BACK INTO ENGLISH

I want to go horseback riding.