Broken collarbones and road rash are the most frequent injuries in bicycle racing but there is growing concern about concussions.

WSJ: Cycling's Occupational Hazard

Florida's state bicycle racing association hired Usada last year to initiate testing at its races, after local racers began complaining that older riders were getting faster rather than slower with age.

WSJ: Cycling's Minor Leagues of Doping

And I remember how a few months after that I would watch him on a bicycle, racing with his fellow wounded warriors on a sparkling spring day, inspiring other heroes who had just begun the hard path he had traveled -- he gives me hope.

WHITEHOUSE: The White House

Bridgestone became known for making the "thinking man's bicycle" because each ad spotlighted a different piece of equipment instead of a racing finish.

FORBES: Easy Rider