The 33-year-old made it a quadruple crown as tens of thousands of fans packed the capital’s baking hot streets to roar on the star.
David Weir told Channel 4 he thought he was “going to die” in the first six miles of the race because of the pace being set by his competitors.
He described winning his fourth gold of the Games as a “dream come true” and said the crowds had been “amazing”.
Nicknamed The Weirwolf, the London-born star is unbeaten in the Games, having won gold in 800m, 1500m and 5000m as well as the 26.2 mile marathon.
Weir has cemented himself as a household name and had the ecstatic crowd, who lined The Mall, howling with delight for his fourth gold to cap a stunning clean sweep.
Paralympic Games shifts attitudes towards disabilities
The superhuman efforts of the Paralympian athletes prompts a positive swell in public attitude towards disabilities in the UK - despite half of those surveyed never having watched a paralympic sport before.