Running allows me to set my mind free. Nothing seems impossible, nothing unattainable.

There are a million reasons why you can't. Focus on the few reasons why you can.

That's the thing about running: your greatest runs are rarely measured by racing success. They are moments in time when running allows you to see how wonderful your life it.

Never underestimate the power that one good workout can have on your mind. Keeping the dream alive is half the battle.

Running has always been a relief and a sanctuary—something that makes me feel good, both physically and mentally. For me it's not so much about the health benefits. Those are great, but I believe that the best thing about running is the joy it brings to life.

Hill sprints are good for everyone!

I have a power word that I use-when I qualified for the Olympics in 2008, it was fighter. That way when I'm in the race and I get to those dark moments, I can think of the word and it evokes that emotion for me.