Prosecutor Neil King told the court Ashley Gill-Webb threw a bottle in the hushed stadium just as the race was about to get under way:
He threw a green Heineken bottle in a lobbing motion that was captured on CCTV.
This bottle landed extremely close to the athletes and it's probably luck rather than Mr Gill-Webb's judgment that it did not do anything far more serious.
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The high of 35C was recorded on a Bakerloo line train between Piccadilly Circus and Oxford Circus at 2pm.
Weather forecasters say temperatures could reach 35C, beating the previous record of 34.6C in the scorching summer of 1976.
After years of political manoeuvring over the future expansion of Heathrow Airport, there has been an important development this lunchtime.