Ok, so I found this phrase in regards to a profile of a character and there's a list given with his abilities and such. The first thing in that list was that it said that the character has good reflexes, followed by this: 足が遠い. What I could understand was that, literally, his legs reach far? Does it imply that I dunno, he is flexible? I don't think it's similar to 長い, right? It sounded quite peculiar to me and I couldn't find some examples in sentences, except for this other phrase 足が遠のく which it looked similar, but it has another meaning.
Ok, that expression have various meanings for what I've read, It can means that "you are far (from home)", meaning that you are travelling or living abroad, maybe in a tour. It can also means that you are distant of yourself or distant of someone So It maybe sounds weird beacuse it does not make any logic in our own languages, let me show you some other examples:
背が高い (せがたかい): (My back is tall) ► I'm tall
体が痛い (からだがいたい): My body hurts (This one is not always use in the literal way, sometimes you use it when you feel bad)
So as you can see in japanese some expressions doesn't mean the literal translation in our languages, I hope this answer help you ;)