What I've learned from my own journey, and from my family's experience with cancer, is how important it is to stay positive and move forward. Not every day is going to be perfect; that's life. But staying positive is going to get you to the next day.

I don't fear anything.

It's sad to know I'm done. But looking back, I've got a lot of great memories.

This Olympics is almost a little sad. It is my final Olympics. There are a lot of good memories.

I never could have achieved the success that I have without setting physical activity and health goals.

Anytime you ride against the best in the world, it becomes a learning process.

I just hope I can get another personal best. If I can do that, I'll be satisfied.