Rebecca Adlington has said she wants the British public to show support for Team GB, especially as Rio "is not on people's doorsteps" like London was.
The double Olympic gold medallist, who will be fronting coverage of the swimming as part of a team with Helen Skelton and fellow Olympian Mark Foster, said she wants British athletes to feel as supported as she did when she competed in London.
The 27-year-old also said she is looking forward to the Games but will miss her one-year-old daughter Summer.
"As much as I cannot wait to go, it'll be the longest time away from my daughter I have ever spent," she said. "By (the end of the swimming) I'm going to be itching to get home."
Adlington spoke before the huge sculpture of her was unveiled in Hyde Park.
The sculpture, which is the size of a double-decker bus, was commissioned by an official sponsor of team GB, Kellogg's.
It hopes to get Londoners excited for the Olympics in Rio and promote getting a great start in the mornings.
Adlington said her own morning routine has changed a lot since the birth of her daughter.
"The start to the day when I was training was my alarm going off at ten past five," she said. "I'd get up, eat cereal and go straight to the pool and swim for two hours.
"Now, I don't set an alarm and my daughter wakes me up going 'lalala' on the monitor. She normally gets up between six and half-past, so it's a little bit of a lie-in compared to when I trained, which is nice."
Adlington spoke passionately about the need for fans in the UK to get behind GB athletes in Rio.
"I remember how important the support was to me in London. I had never experienced that amount of people supporting me, it was overwhelming. All the athletes felt it.
"I want the athletes this time to feel like that."
Official Team GB sponsor Kellogg's has unveiled a giant sculpture of Rebecca Adlington in The Serpentine, Hyde Park, to inspire British athletes ahead of the 2016 Olympic Games in Rio. Two-time Olympic gold medal winner Rebecca is an ambassador for Kellogg's Great Starts campaign and to see her top tips on how to get off to a great start visit www.kelloggs.co.uk/greatstarts