Olympic champion Victoria Pendleton says she is in the best shape of her life and cannot wait for the London Games to begin.
The gold medallist added that her rigorous two-year training plan has left her in peak physical condition and she is counting down the days until the start of the competition.
Speaking at the launch of the Samsung Hope Relay, which aims to get people to exercise to raise money for good causes, Pendleton said she is feeling competitive.
"Training has been going really well, I'm really pleased with it.
"I took a two-year training programme to build up to the Olympics and I'm really pleased with the way it's panned out and I think I'm in the best form I've ever been in at this stage. Definitely compared to the last Olympic cycle I'm in better condition.
"I don't really think I could get any fitter. As an elite athlete you're always on the limit, push yourself any further and you could get injured."
With so much anticipation, the world champion said she cannot wait to step out for her first race.
"I'm feeling really positive about it, I just want to get out there now! It's nearly here, I've got a 100-days-to-go chocolate calendar and I'm opening the doors and can see how close it's getting."
With excitement comes pressure as the start of the Olympics draws closer, but Pendleton is taking it in her stride.
"There's a lot of pressure but we've always known it was going to be building, it's a home games!
"The pressure is not going to disappear and life will be a breeze tomorrow but it adds to the challenge of what you want to achieve and how you're going to push yourself.
"This is going to be the hardest and biggest event I've ever competed in and I want to do my very best. Everything put together makes for a huge experience."
After some disappointing performances in the past, she said she is even more determined to cherish the experience of competing for her country on home turf.
"I've had bad experiences in competitions, in Athens I was really disappointed with my result so I felt really negatively about the whole thing.
"After that I had to change my approach and decide to enjoy everything about it, where we're staying, what we're eating and wearing, being part of a team.
"I want to take it all in because sometimes you're so involved in your little area of sport you forget you're on the team representing GB at the Olympic Games, it's a pretty special thing.
"I want to look back on it for the rest of my life and just think 'wow'."
Launching the Samsung Hope Relay with celebrity chef Jamie Oliver, Pendleton said the initiative would help everyone feel like they could take part in their own personal challenge.
For every mile those taking part complete, Samsung will donate £1 to charity, including Kids Company, which helps disadvantaged children, and London 2012's international sports legacy programme.
Oliver joked his dream relay team would involve some of the world's top chefs.
"(Antony) Worrall Thompson, (Gordon) Ramsay, Gary Rhodes, we could have a chef squad," he said.
Pendleton added: "Everyone can get involved in this. I will do as many miles as I can get away with. I'm determined to do the most, I'm feeling competitive."
Both Pendleton and Oliver completed their first mile after setting off from the front of London's City Hall.
The champion cyclist sped off on a shopper bike while food guru Oliver demonstrated his brisk walk.
Oliver said: "Hopefully we can inspire everyone to take part, if it gets people out there, getting them a bit healthier and raising money for charity then that has to be a good thing."
Pendleton said she would be encouraging other members of the track squad to take part in the initiative, adding all of Team GB is supportive of one another.
"We all try to keep low key and carry on with our training. It's going to get pretty big very soon so we just stick to what we know and concentrate on getting to the best condition."
Samsung hopes to raise millions of pounds for charity with the relay.
After downloading the app to a smart phone, GPS technology tracks the distance and records the results to calculate how much should be donated.
Starting in the UK, it will be expanded to about 20 countries around the world. It will run to August 12.
