3:35.6 on cinders, he won by nearly 3 seconds, taking the lead before the 800m mark.
He had basically taken 1959 off to focus on his family and studies, and only began serious training (and 'stopped smoking') in the winter.
Still, he had barely raced anybody of note since 1958.
Six weeks before the Olympics he had become ill and had been vomiting, and two days before the final he developed a sore throat and swollen glands.
Yet still crushed the field and broke his own WR.
And he was still only 22.
On the Paris track and supershoes, he would probably have run 3:27 conservatively.
Although his coach Percy Cerutty was obviously ahead of his time in some respects, a lot of his coaching ideas were a bit cookie too. And as far as I know, Elliott never did any high-altitude training (unlike Michel Jazy in second). And all this was before blooddoping was a thing, let alone EPO.