Michelle Martinelli

For many Olympic athletes, the financial burden of training can be ever present. Most are living paycheck to paycheck or working second jobs.

Gretchen Walsh, the 21-year-old University of Virginia star, swam a 55.18 to break the world record in the women's 100 butterfly.

Competing at the Olympics is a dream shared by countless athletes around the globe, but only a select few will ever get the opportunity. But when it happens — like it is right now for a lot of athletes hoping to make Olympic rosters — it's a magical…

Three days before the last race of her career, Danica Patrick is feeling a little bit of everything — nervous, excited and a little anxious.