In the marathon anything can happen.

The cheats always have a way of justifying their behaviour - everyone else is getting away with it, so why shouldn't I? But because they're so reliant on the drugs - and the drugs are not always perfect, you're not guaranteed to peak at a big event - they don't have the confidence to look in the mirror and know that they can go out and give their best. If you're clean and you've prepared well for a race, that's where you have an edge.

I prefer just a women's race. It's a totally different game mentally.

I don't feel guilty in having pleasure!

I was glad I did a year abroad, because it helped me as an athlete and as a person. That took me out of my comfort zone. Watching the French athletes train in the Pyrenees made me realise what I had to do to become a top athlete.

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.

I have achieved a lot and I'm grateful for that - I'm just a bit greedy because I want to add the Olympics. It's once every four years - everyone wants it and very few people get it.