New records are being set on the track, in the water — and deep underneath the British capital.

Transport officials say the games have led to the busiest days ever on London's transport network, with more than 4.3 million journeys counted on the capital's subway system on Thursday alone.

London's sprawling subway system — known as the Tube — typically sees about up to 4 million journeys a day.

Transport has been a key concern for Olympic organizers, with some wondering whether the capital's stretched transit network would cope. So far, however, London seems to have avoided any major headaches.

— Raphael Satter — Twitter http://raphae.li/twitter

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EDITOR'S NOTE — "Eyes on London" shows you the Olympics through the eyes of Associated Press journalists across the 2012 Olympic city and around the world. Follow them on Twitter where available with the handles listed after each item.

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