Also, EDDF/FRA, in which one runway got renamed to C when they opened a smaller one in the 2010s. Then you have airports like ORD which have more than three pa

Also, EDDF/FRA, in which one runway got renamed to C when they opened a smaller one in the 2010s. Then you have airports like ORD which have more than three parallel runways - but pretend some of them are ten degrees off to get more naming space. [1] [1] https://upload.wikimedia.org/wikipedia/commons/a/aa/FAA_O%27Hare_Diagram.svg https://upload.wikimedia.org/wikipedia/commons/a/aa/FAA_O%27...