Complex sentence: Meares made an astonishing come back from a very bad cycling accident at the World Cup in January 2008 when she broke her neck, she crashed in the third round of the World Cup circuit in Los Angeles in January 2008, seven months out from the Olympics.
Split into simpler sentences: Meares made an astonishing come back from a very bad cycling accident at the World Cup in January 2008 when she broke her neck. Meares crashed in the third round of the World Cup circuit in Los Angeles in January 2008, seven months out from the Olympics.