Miles away (4)
I believe the answer is:
afar
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">miles away</span>' is the definition.<br/ ><span class="explanation-format__explanation">(far away)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for afar that I've seen before include "At a distance (poetic)" , "long way back" , "A long way away" , "Unusually distant" , "beyond the horizon" .)