On such a poignant day, make sure you don't miss any of the action with our must-see TV Guide.
Sibling rivalry in the Men's Triathlon
It's a family affair in London 2012's gruelling Men's Triathlon, as Brownlee brothers Alistair and Jonny battle it out against fellow Team GB star Stuart Hayes and a whole bunch of others on land, in water and on a bike. Of course, we're keeping our fingers crossed for the gold, but with the course winding through iconic landmarks like The Serpentine, Hyde Park and Buckingham Palace (hope you're watching, Liz), we'll at least get some truly awesome views. The race is on from 11.30am on BBC One.
Sir Chris Hoy and Victoria Pendleton get on their bikes
We'll be entering the Velodrome for one last time tonight and, oh boy, we could be on for an amazing display from Team GB, as the now-legendary Sir Chris Hoy and Victoria Pendleton will both be chasing their final medals of not just the London 2012 Games, but of their Olympic careers. Hoy will be going for his sixth gold in the Men's Keirin Final from 6pm on BBC Two, while Pendleton is competing in the Women's Individual Sprint from 4pm on BBC Olympics 8. With help from Laura Trott in the Women's Omnium, the Team GB cyclists just might best their seven golds from Beijing.
Robbie Grabarz leaps for gold
We were always rubbish at the high jump - couldn't get the hang of that Fosbury Flop thing. That's probably why we get such a kick out of seeing Robbie Grabarz throwing himself over beams without breaking a sweat. He's a real medal hope as well, so make sure you catch the Men's High Jump Final from 7pm on BBC One to see if Team GB's gold streak can continue.
Best of the Rest
Great Britain only need a draw with Spain in the Hockey to reach the semi-finals. Can they do it? Find out at 7pm on BBC Olympics 7.
Windsurfing is set to be replaced by kiteboarding at Rio 2016, so why not cheer on Nick Dempsey and Bryony Shaw in possibly the sport's last ever Olympic races from 1pm on BBC Olympics 4.
Carl Hester, Laura Bechtolsheimer and Charlotte Dujardin could make Olympic history by winning Great Britain's first ever Dressage medal from 10am on BBC Olympics 5.
Watch Digital Spy's showbiz Olympics video below:
Photo gallery - London 2012:
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