Mo Farah admits he is wrestling with the idea of carrying on to the Tokyo 2020 Olympics after completing an extraordinary Olympic "double double" on Saturday night. However, he concedes he will be forced to take it a year at a time as he faces up to getting older and wanting to spend more time with his family.
The Kenyan Eliud Kipchoge further enhanced his claims to be considered the greatest marathon runner of all time as he powered away from a high-class field to win the Olympic title. There was also delight for Callum Hawkins, a 24-year-old from Kilbarchan in Scotland, who finished a hugely impressive ninth.
The years and opponents might change, but for Mo Farah some things remain ever present: that feeling of accelerating through the gears, the thrill of leaving his rivals clutching at his slipstream, the joy of kissing the track knowing another gold medal is in the bag.
The first words that came out of Vicky Holland's mouth after a desperate sprint had taken her to a thrillingly unexpected Olympic triathlon bronze medal were an apology. Turning to face her best friend, flatmate and training partner Non Stanford, who she had just powered past, she whispered: "I'm so sorry."
Glory in the women's 4x100m relay went to the United States, who ran the second fastest time in history, and particularly to Allyson Felix, who became the first female track and field athlete to win five gold medals.
Usain Bolt has completed his triple-triple, anchoring the Jamaica 4x100m relay to victory in the final to ensure three gold medals at three consecutive Olympics. Bolt, who has won the 100m, 200m and 4x100m relay gold medals at Beijing, London and now Rio, crossed in 37.27 seconds on Friday.
Britain's Mo Farah is once again a huge favourite on Saturday night as he attempts to become only the second man after Lasse Viren, the Flying Finn, to win 5,000m and 10,000m gold at two Olympics. But he is taking nothing for granted as he undergoes his final preparations before facing a formidable Ethiopian challenge in the 5,000m final.
Moments after Usain Bolt had clinched his eighth Olympic title with much the same ease as his other seven, he smiled serenely into the cameras and hollered: "Number one!" Once again, he had proven that he was the greatest sprinter in history.
Alistair and Jonny Brownlee spoke of their "very special" day after becoming the first British brothers to win gold and silver in the same Olympic event. The pair were locked in an almighty duel for triathlon gold along Copacabana beach before Alistair, at 28 the oldest by two years, struck for home to retain the triathlon title he won at London 2012.
Alistair and Jonny Brownlee became the first British athletes in Olympic history to finish first and second in the same event as they took gold and silver in the triathlon a scorching day on the Copacabana beach.
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Selecting a term
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