The Ethiopian-born Dutch runner kicked off her non-stop week of track action with victory in the 5,000m on Monday.
There followed a bronze in Friday's 1500m, before she dusted down her spikes just 24 hours later for a tilt at the longest of her chosen disciplines in the same testing hot and humid conditions that have beset the Olympics.
"I am so happy and I cried during the medal ceremony. I actually realised that I am done, the Games are over," said Hassan, who emulated Ethiopian Tirunesh Dibaba's distance double at the 2008 Beijing Olympics.
"I am just so thankful, and I don't think I could have done any better than this. During the medal ceremony I was thinking: 'It is over. Now you can sleep!'"
She added: "It's not about how strong I am but how strong are the ladies I challenge. Now I am happy, I am done, it's over."
With heats and semi-finals as well, it meant Hassan was in action on five days of the nine-day schedule of track and field.
In fact, she ran over 61 laps on the track over the nine days, including competing in a 1500m heat -- in which she recovered from a dramatic fall -- on the same day as the 5,000m final.
"We women are very capable, we are a lot stronger," she said of her demanding schedule.
"If you want it, you are strong and you can do it. People can do it. It is for everyone."
In the 10,000m Hassan clocked 29min 55.32sec for gold, with Bahrain's Kalkidan Gezahegne, also born in Ethiopia, claiming silver in 29:56.18.
Ethiopian Letesenbet Gidey, after leading for all but two kilometres of the 25-lap race, claimed bronze in 30:01.72.
Gidey was comfortable in second behind early pace setter Ririka Hironaka of Japan, with Hassan close behind.
The Ethiopian world record holder over both 5,000 and 10,000m potentially lost an ally as teammate Tsigie Gebreseslama pulled up injured after just two laps.
- Last-lap kick -
But that proved to be false as, with 18 laps to run, Gidey moved to the front, followed by the phalanx of Kenyans as the lead pack was cut to 12.
Four laps further on and Gidey upped the pace and soon only Kenya's 5,000m silver medallist Hellen Obiri and Irine Cheptai, Hassan and Gezahegne could cope with the Ethiopian's unrelenting rhythm.
Moving into the final 10 laps, Cheptai had been dropped, leaving a clear four-way battle.
Obiri started to struggle and then it was down to three, Gidey looking powerful and in complete control.
At the bell that signalled the last lap, Gidey kicked, Hassan and Gezahegne quickly bunching in readiness for a counter-attack.
Shoulder to shoulder, Hassan swept past Gidey at the 150-metre mark.
Unlike the 1500m, when she was left flat-footed in the home stretch, Hassan ensured she made no mistake, producing a dazzling sprint away from the Bahraini, arms raised in glory as she crossed the line to claim her second gold.
Obiri finished fourth, with Burundi's Francine Niyonsaba, who won Olympic 800m silver in Rio, in fifth in a national record.
Niyonsaba, also a two-time world indoor 800m champion, had changed events after falling foul of World Athletics' rules regarding women born with elevated testosterone, meaning she was barred from events from 400m to the mile.
Hassan's feat drew admiration from her rivals, Gezahegne saying: "It was very difficult, she's a tough girl.
"I appreciate her because it's challenging, especially with this weather."
Britain's Eilish McColgan added: "She's amazing. It's pretty cool to be part of history."
Olympics Tokyo 2020