Today Pascoe, whose success has all come in the pool, beat the world record she set in London four years ago by more than half a second, finishing six seconds ahead of Canadian Aurelie Rivard.
Pascoe, who lost the lower half of a leg in a lawnmowing accident when she was three, was chuffed with today's performance.
"To be good at all four strokes and to put it all together in one race is challenging," she said.
"I set the benchmark pretty high four years ago setting the world record with a 2min 25s and to finally turn around tonight and see a 2:24 I am just absolutely stoked.
"I am really relieved and could not be happier to be able to share this moment with my family, friends and support team."
Pascoe has two golds and a silver so far in Rio. In London she equalled the individual Games record of six medals, established by Duane Kale at Atlanta in 1996.