Trinity Great Court. King Edward's Tower is where the Great Court clock is located which rings the hour twice, supposedly once for Trinity and once for St John's. It is this clock which is used to time the race by students around Great Court at midnight on the night of the annual Matriculation Feast, as featured in the film 'Chariots of Fire', although Trinity did not allow this to be filmed in college (it was filmed at Eton College instead.) The idea is to get around the court before the clock finishes ringing, and the only way most people can do this is by cutting corners. The only way I can do it is by... well, by cutting doing it at all.