Mo Farah will attempt to clinch the "double double" in Rio, as Team GB hopes to continue its gold rush following a historic day of competition.
The nation's gold medal tally stands at 26, with wins for boxer Nicola Adams and canoeist Liam Heath boosting the British team's haul on the penultimate day of the Games.
Farah is bidding to win the 5,000 metres gold, to add to his 10,000 metres victory from last weekend and his golds from the same events at London 2012.
Amid Saturday's successes Tom Daley made a shock exit in the semi-finals of the men's 10m platform final, having previously spoken of his yearning for the top spot.
His hopes of beating his London 2012 bronze finish in the individual event were dashed when he crashed out of the semi-finals, finishing last of 18 competitors.
Speaking shortly after the surprise flop, Daley said: "I guess I'm kind of in shock right now because I know that I could win that gold medal and am probably the only one who could challenge the Chinese for that gold."
Adams, the first British boxer to retain an Olympic title in 92 years, said she felt "amazing" after her win and was tearful as she stood on the podium.
She told the BBC: "The gold rush continues. I can't believe it. I'm now officially the most accomplished amateur boxer we have ever had, like ever, and it's such an amazing feeling."
She added: "It takes a lot to win an Olympic medal, especially to be able to do it twice."
Heath's win in the the K1 200m final saw him become Britain's most successful Olympic canoeist.
He described the victory, which came two days after after he scooped silver alongside Jon Schofield in the doubles event, as "absolutely incredible".
Vicky Holland followed in the footsteps of the female hockey heroes who scooped gold on Friday, taking the first ever British Olympic medal in the women's triathlon.
Bronze-winner Holland said she was delighted but had mixed emotions as she beat her flatmate Non Stanford in the sprint to the finish line.
With 63 medals already secured, Bianca Walkden and Mahama Cho are both due to compete for bronze medals in their Taekwondo events overnight.
Team GB's Rio haul could equal, if not exceed, their total during the home Games of 2012, when they secured 65 medals.