Mo Farah successfully defended his Olympic 5,000m title on a day when Team GB ensured they will leave Rio with a bigger medal haul than London 2012.
Farah’s victory added to his gold in the 10,000m and secured a repeat of the distance double he achieved on home soil four years ago.
The medal was Team GB’s 65th of the Olympics, equalling London’s tally.
The 2012 total was then eclipsed when Britain’s women won bronze in the final of the 4x400m relay.
The final medal total will be at least 67, with boxer Joe Joyce already guaranteed a gold or silver in Sunday’s super-heavyweight final.
This was already Team GB’s most successful overseas Games – eclipsing the 47 medals won in Beijing in 2008 – and best medal return at any Games since the 146 amassed in London in 1908.
Earlier, Nicola Adams and Liam Heath won gold as Team GB won six medals on the penultimate day of competition.
Adams successfully defended her flyweight boxing title, while Heath won the kayak single 200m sprint.
Vicky Holland and Bianca Walkden were the other GB medal winners on day 15.
Holland won bronze in the women’s triathlon, while taekwondo fighter Walkden took bronze in the +67kg category.