The mother of Saffie-Rose Roussos - the eight-year-old who died in the Manchester Arena atrocity - completed the Great Manchester Run in memory of her daughter.
Lisa Roussos was badly injured in the attack and had to learn to walk again.
Accompanied by Figen Murray, the mother of victim Martyn Hett, members of her family, friends and physiotherapists and medics who helped her recovery, Lisa tackled the route to raise funds for the family's new charity which has been launched to help those affected by acts of terrorism.
Hand-in-hand, they set off from the start line on Portland Street to rapturous applause from spectators.
Before the race Mrs Roussos posed for pictures with her husband Andrew, Saffie's dad, and son Xander, her brother.
Mr Roussos said at Saffie's funeral that she 'wanted to be the most famous girl in the world' - and the touching sentiment was being shared widely on social media ahead of the Great Manchester Run.
The charity - 22MCR - aims to support all victims of terrorism.
Mrs Roussos, writing on the Go Fund Me site, said: "I suffered horrific injuries as a result of the bombing and whilst the physical and emotional pain lives on, I am determined to make a difference to the lives of others who find themselves caught up in similar horrors to those faced by my family and the other families that awful day.
"My injuries resulted in me having to learn to walk again.
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"I have experienced first hand the amazing work that the NHS provides and the ongoing physiotherapy support from The Manchester Institute of Heath and Performance.
"Unfortunately, once you've been discharged from the NHS the ongoing support is minimal, whether it's mental health, financial or rehabilitation.
"The last 15months or so we have been working on setting up a charity called 22MCR.
"It will be one of the first charities to help victims of terrorism as there is tragically little support in the UK or from the government when atrocities like this take place.
"Imagine where we would have been had the public not been so magnificent in their support.
"We are at the final stages of getting the charity registered and any donations received on this page will go directly to the charity 22MCR."
Firefighter Aaron Lee, from Rochdale, is also taking part in today's 10k run in Saffie's memory.
He's run 21 10k's before Sunday's race - one for each of the victim's the the attack in May, 2017.
Saffie was at the Ariana Grande concert with her mum and sister Ashlee Bromwich, who was also badly injured.
