7 “Peter therefore went forth, and that other disciple, and came to the sepulchre. So they ran both together: and that other disciple did outrun Peter, and came first to the sepulchre.” The repetition here is worthy of notice and of commendation for the way in which a return is made to what had previously been omitted, and yet is added just as if it followed in due order. For after having already said, “they came to the sepulchre,” he goes back to tell us how they came, and says, “so they ran both together,” etc. Where he shows that, by outrunning his companion, there came first to the sepulchre that other disciple, by whom he means himself, while he relates all as if speaking of another.
Source: Tractates on the Gospel of John (New Advent)