More than 3400 children from across Glasgow poured into the city centre site to try their hand at a 1.5k fun run, as well as a host of other sports including hockey, football, cheerleading and volleyball.
They were given their starters orders by Olympic gold medal winner Haile Gebrselassie, cross country runner Freya Ross, Commonwealth athlete Susan Partridge and Junior Athletics champion Stephanie Twell, who acted as inspiration and motivation for the thousands of youngsters.
The event signified the lead up to this weekend's Great Scottish Run, which is expected to attract 30,000 fitness fanatics to the streets of Glasgow this weekend.
Robin Bulloch, managing director of Bank of Scotland Community Bank, said: "I am delighted to see the popularity of the Bank of Scotland Friday Schools Challenge continue to grow with an additional 400 children taking part in 2013.
"Over 70 local schools have introduced training skills for today's run into their lesson plans over the last few weeks."
Councillor Archie Graham, chairman of Glasgow Life, said: "It was amazing to see 3400 primary school children enjoying a range of sports and activities on Glasgow Green.
"Glasgow has been investing in grass-roots sports for many years and I have no doubt that today's event will build on our success in inspiring the next generation of sport stars."