And it IS long. "Two football fields" is the usual way the measurement is expressed. A friend of mine got married there instead of in one of the side chapels, and later she said, "What was I THINKING?" because of the long march.
I knew it was long but seeing it expressed in "two football fields" just made it longer in my mind. I cannot imagine walking down that long aisle. What a beautiful place to hold your wedding even with the long aisle. I have always loved the Washington Cathedral.