The judge sentencing Ashley Gill-Webb said although his behaviour was "serious" enough to demand punishment, he thought Gill-Webb was unlikely to offend again.
Gill-Webb was found guilty of intending to cause the men's Olympic 100m finalists harassment, alarm or distress by using threatening, abusive or disorderly behaviour.
Prosecutor Helen Shaw said the high-profile nature of the incident and the fact that the world was watching were aggravating factors.
[It was a] once-in-a-four-year event watched by millions of people around the world.
Some of the people who were in that area missed the event and had paid up to £4,000 a ticket.
More top news
In celebration of Her Majesty's 89th birthday today, we look back on some of the most important moments of her life.
Jeremy Renner has joked that director Joss Whedon's task on The Avengers film set is like "herding kittens".
Monster hunters can now explore Loch Ness on Google Maps - but will you be able to spot Nessie?