Concorde question

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The great race!

Hy guys,
I think this is really interesting for all of you!

From magazine "Airliner World":

- In June 1974 Air France pitted Concorde against the B747 in a direct race. The B747 departed Orly Airport in the French capital Paris at 08:22 on the morning of June 17 bound for Boston. At the same time one of the airline's Concorde fleet took off from Boston's Logan Airport bound for Paris. When Concorde passed the B747, albeit at twice the altitude and flying in the opposite direction, it had already covered 2400 miles (3862km), the B747 barely covering 600miles(966km). The Concorde landed at Paris, spent an hour on the ground while it was refuelled, and took off for its return flight to Boston, where it arrived eleven minutes before the B747. -

Those were the times!