CNN  — 

The Rio Games may be finished, but the golden feats of these athlete will live on in Olympic history forever.

Two sporting titans took their final Olympic bows, but for others it was just the start of what could be a glittering journey.

Read more: Michael Phelps - The man who changed swimming

Read more: Usain Bolt - The greatest athlete of all time?

Read more: Gymnastics sensation turns cliff-jumper?

Read more: Record-breaker coached by 74-year-old great-grandma

Watch: Ledecky crushes rivals, smashes record

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