Farah shrugged off continued doping allegations to mount a second defence of the 10,000m in London after victories in Moscow in 2013 and Beijing two years ago. He still had six men for company down the backstretch, yet held his nerve and ultimately devastating kick to win in 26:49.53 - the fastest time in the world this year.
That 100m final takes place on Saturday, but another legend of the sport goes in a final this evening - that's Mo Farah, who contests the 10,000m, which is a straight final with no heats.
Mo Farah is confident he can win the 5,000 metres at the World Athletics Championships despite injuring his knee and needing three stitches in his left leg after his epic 10,000 metres triumph on Friday.
The win comes five years to the day since he claimed Olympic 10,000m gold on "Super Saturday" at London 2012 and extends his unbeaten run over the distance to nine races stretching back to 2011.
Uganda's Joshua Cheptegei took second in 26:49.94, his own fast finish not enough to seriously challenge the champion, while Paul Tanui (26:50.60) claimed bronze for Kenya. "To all the kids out there, if you want to be like me it is possible if you work hard". The distance runner said he believed in his sprinting abilities that once again has worked in his favour.
From there on the race unfolded into the inevitable, and became all about Farah, who despite producing these unbreakable displays on the track, still can't distance himself from the shadow of drugs, specially his association coach Alberto Salazar, now being investigated by USA anti-doping. "This was very special", Farah said.
"I just had to stay strong, I was just thinking that I can't lose in my home town".
"I knew at 12 laps to go when they went hard from there I knew it was going to be tough". It was terrible. I've got the 5000m, though. "At 24, she's still developing and, although gold might be just out of reach, when the final comes around on Monday, I'm backing Laura to take a gutsy silver". "I have to get this start together because I can't keep doing this", Bolt told reporters.
BBC 5 live commentator Mike Costello: "It was astonishing the discipline he showed to win and he looked so in control it was nearly like his great hero Muhammad Ali to George Foreman in the Rumble of the Jungle when he said 'is that all you've got?'" At 34, there has to be a question mark over whether he has that final-lap blistering pace. "This was very special". Nothing was going to stop Farah, even a little stumble off balance where his foot went off the track could not prevent Farah from gaining his last 10,000m gold.
Reece Prescod qualified in 10.03 seconds, with CJ Ujah joining him in 10.07 seconds and James Dasaolu coming home second behind Usain Bolt in the sixth heat in 10.13 seconds.