There's a lot to look forward to if and when the Games start on July 23, 2021, but it makes us crave what we've been missing this summer even more.
She has been undefeated in the all-around since 2013. Her dominance is unprecedented.
Biles had always maintained that she would retire after this summer's Games and, in April, the 23-year-old was not fully committed to participating in the delayed Games. She is however back in the gym. An Olympic without Biles wouldn't be quite the same.
Who will be the next Phelps?
Mark Spitz's tally of seven gold medals at the 1972 Munich Olympics was a feat few thought was surpassed.
That was until Michael Phelps splashed the scene.
Phelps had six gold and two bronze medals in Athens in 2004. Spitz could rest a little longer. But four years later, in Beijing, Phelps won eight magnificent gold medals.
Over the next two Olympics, in London and Rio, Phelps took his Olympic career tally to 23 gold, three silver and two bronze.
Phelps is now retired, and while it seems unthinkable that anyone will ever hit their Olympic medal tally, who will fill their shoes as a swimming figurehead?
At the 2019 World Swimming Championships, Dressel won six gold and two silver medals, breaking Phelps' 10-year world record in the 100-meter butterfly final by 0.32 seconds.
Dressel may not run in the same range of events as Phelps, but he could well be Phelps' successor as the next big in American swimming.
New and returning sports
With each edition of the Olympic Games, new sports are welcome in the fray.
For Tokyo, five sports have been added to the calendar. Karate, sport climbing, surfing and skateboarding will make their Olympic debuts, while baseball and softball will return after a 12-year absence.
But the inclusion of all of these sports is huge for their respective international status.
"There will be people listening ... they would never have considered that; they probably would never have seen the beach or picked up a board and be able to have this opportunity as a sport to show it's fantastic. ," she says.
Fitzgibbons added that the addition of surfing was a sign of the modernization of the Games and of a willingness to "move with the times".
Can Bolt be replaced?
Usain Bolt has been, without doubt, the face of the Olympics since his spectacular performances in Beijing. So the big question is: can anyone replace the record showman?
The two best sprinters in the world at the moment are Americans Christian Coleman and Noah Lyles. Coleman is the reigning 100-meter world champion and Lyles is the 200-meter world champion.
He could well break Bolt's second record of 19.19 in Tokyo.
Mo's quest for a three peat
If the Briton can win a third Olympic gold medal in the 10,000m in Tokyo, he will strengthen his reputation as a great long-distance runner.