YOU SAID:
This is the furthest my base can fly
INTO JAPANESE
これは私の基地が飛べる距離です
BACK INTO ENGLISH
This is the distance my base can fly
INTO JAPANESE
これが私の基地が飛べる距離です
BACK INTO ENGLISH
This is how far my base can fly
INTO JAPANESE
これが私の基地が飛べる距離です
BACK INTO ENGLISH
This is how far my base can fly
That didn't even make that much sense in English.