His legs were tired, but Britain’s Mo Farah produced blistering pace in the final straight to become the first man in 40 years to retain the two Olympic distance titles.

The 33-year-old, who fought back from a stumble to claim the 10,000m last week, said his victory in the 5,000m on Saturday night had been the most satisfying of the four golds.

Farah won his second straight 5,000m in 13min 3.30sec to match the feat of Finland’s Lasse Viren who retained the same Olympic titles in 1976.

“Oh my God I can’t believe it,” said Farah. “It’s every athlete’s dream but I can’t believe it. My legs were tired after the 10,000m and people had to bring me food in my room.

“This is the most satisfying win of the four, it is incredible.”

Farah, who trains in Oregon under ex-marathon great Alberto Salazar, said watching Ethiopian distance legend Kenenisa Bekele medalling had been an inspiration.

“When Bekele won all those medals I said I just want one. If you have dreams they can come true and I always wanted to achieve these for my kids because for so much of the year you don’t see them and thus you want to show them something or rather the reason for the absences.”

What was your favourite moment of day 15?