Published Saturday, 28 July 2012
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Seven promising youngsters carried the torch around the stadium in London on Friday night during the opening ceremony for the 2012 Games - which was watched by over 22 million people in the UK.
The flame was handed to the group by five time gold medal winning rower Sir Steve Redgrave, and they were then joined by seven Olympic greats on their way to lighting the beacon.
It marked the end of the 70-day torch relay around the UK.
Katie, who is from Holywood, was nominated for the task by Dame Mary Peters, who won gold in the women's pentathlon at the 1972 Munich Games 40 years ago.
The teenager said it was "such an honour" to be involved.
"It was really exciting," said Katie, who got to know Dame Mary after running at the Mary Peters Track in south Belfast.
"The atmosphere was brilliant. It was just such an honour to be chosen to do it. I didn't understand just what an honour it was until now."
I'm so honoured that Mary chose me
She added that she got to enjoy most of the opening ceremony, which was masterminded by Slumdog Millionaire director Danny Boyle, before setting out on the final run.
"We had seats so got to watch all the dancing and music and had time to soak in the atmosphere," Miss Kirk continued.
"When I ran my knees were shaking, it was very nerve-wracking."
Hundreds of people gathered at City Hall in Belfast where the opening event was shown.
DUP Lord Mayor Gavin Robinson said: "It's been great, it's been great to see people from right across Belfast come down to City Hall just for the entertainment beforehand and then the Olympic opening ceremony as well on our big screen.
"So it's great to see how many people have got enthralled by the Olympic Games, they are enthused and inspired by it all."
Actor Sir Kenneth Branagh was also part of the opening event, appearing as engineer Isambard Kingdom Brunel, reciting some lines from The Tempest.
Katie Kirk was part of the gold medal-winning team in the 4x400m relay at the European Junior Championships in Tallinn, Estonia, last year.
She has not been able to compete this summer due to injury but hopes to compete in 2016.
"I'm aiming for Rio," she said.
"I'll be the right age then, and more mature and at my peak. When I was watching all the athletes come round last night, I was thinking, 'that could be me one day'."