West Ham United have unveiled their plans for the Olympic Stadium.
An automated system using drive motors will move all four sides of the lower bowl forward to bring the seats closer to the pitch, thus ensuring that the running track will not be visible when the stadium is in football mode.
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John, who began running for Age UK back in the 1980s when he was aged 53, has raised an incredible amount since then - more than £40,000.
It was Tom's second marathon in two weeks run in memory of his father, Martin Campbell.
Surrey Police are appealing for witnesses after the driver was seriously injured in the crash in the early hours of Saturday.