It's important that athletes can compete on a level playing field. And youngsters coming into the sport can know that if they are working hard and training hard, they'll see a true reflection of where they stand and what they can achieve worldwide and not be swayed by people who are cheating.

I am not driven by any bitterness by what happened in Athens. I learnt a lot of lessons from it and probably came through it a stronger person in the end. There have been a lot of near misses, and that's taught me to keep persevering and that there is a chance it can come right.

Today was not about times, it was about getting in there, enjoying the race, and enjoying the atmosphere

You see, with me, when I'm nervous, I smile and laugh.

I've had a lot of success over the years racing in New York, but the main point is that I feel the marathon is a different event, a lot more my event.

In the week before a race, I try to stay away from germ areas. I keep disinfectant wipes in my bag for when I have to use a supermarket trolley or something like that.

For an athlete, the biggest pressure comes from within. You know what you want to do and what you're capable of.