Law student Sarah Cameron, 21, from Ossett, Wakefield was walking home with her mother and two friends in Sheffield last Wednesday when two cars ran a red light and one struck her.
According to her mother, the two cars were travelling at "a minimum of 60mph" when Ms Cameron jumped out the way of the first car and straight into the path of the second.
The impact threw Ms Cameron into the air but the former gymnastics champion instinctively tucked in her legs, placed her arms around her head and curled up to avoid fatal head injuries.
She was seriously injured, suffering two fractures in her neck and a broken pelvis, knee, leg, thumb and shoulder blade, but her parents are convinced her quick, athletic reactions saved her life.
Her mother Rachael Cameron, 48, told the Daily Mail: "She's in a very bad way and in a lot of pain. I saw everything, it was horrific. I can't believe she has survived.
"There aren't many bones in her body that aren't broken - it's going to take a long time to get her back to normal."
Mrs Cameron added: "The gymnastics saved her as she's got such good reflexes. Sarah remembers being on the bonnet and then making sure she fell the right way.
South Yorkshire police are currently appealing for witnesses who saw the incident to come forward to help identify the reckless drivers.
A spokesperson said: "The two cars approached the red traffic light at the crossing, overtook a line of stationary vehicles at the lights, ignored the red light and continued over the crossing colliding with the pedestrian.
"The woman was carried 20 metres before falling into the road. Both vehicles failed to stop at the scene and we would like help in identifying the vehicles and their drivers."