Families limbered up and laced their trainers to run around Endcliffe Park to help in the fight against heart disease.
Dozens of people took part in the Subway Helping Hearts Family 5km event on Sunday.
Participants were urged to walk, run, jog or push their way around the course to raise funds for the charity, Heart Research UK.
Before the race, the runners - including children and grandparents - took part in a warm-up led by former Sheffield boxer Paul ‘Silky’ Jones.
They were also cheered on by world squash champion and Commonwealth Games gold medallist, Nick Matthew, and Sheffield swimmer Eleanor Faulkner.
After the race the exhausted runners were rewarded for their efforts with a free Subway lunch.
A Heart Research UK spokesman said: “Big thanks to everyone who came down to Endcliffe Park. We had a really fun day and we hope you did, too.
“All the money raised will go towards helping hearts locally.”
The event is one of a series taking place which aims to raise £600,000 and inspire families to live healthier lifestyles.