I have been doing 120 miles a week, when normally I would do about 140.

I've been to three Olympics and I don't feel I've ever quite achieved my best at any of them.

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 can't imagine living and not running.

I have been doing 120 miles a week, when normally I would do about 140.

As an athlete, there are advantages being with a team and getting regular physio...

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.