And so, in a day’s riding or a little more, he shall come to the head of a stony valley, which is so narrow that a man might be within a furlong of it a thousand times and never know that it was there.
We are now within a furlong of the castle.
There are no more uses of "furlong" in the book.
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She seized the lead in the final furlong and never looked back.
And then, as they reached the final furlong, my yelling began to die away.