There is absolutely no doubt it is staged - four cyclists on such a tiny track will have to do a perfectly synchronized show if they are not to crash into each other. FWIW, the track is even set up ON a stage! Of course, they might have suspended the cyclists for the picture, but technically they hardly needed to, some 15 years after Anschütz, and the repeat pose across the different pictures might just as well be due to the photographer being asked to catch a particular (prominent) cyclist in a particular position.
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