Nancy Contreras

Nancy Yareli Contreras Reyes (born January 20, 1978, in Ciudad de México, Distrito Federal) is a female track cyclist from Mexico, who represented her native country twice at the Summer Olympics: 1996 and 2004. She won a bronze medal in the 1995 Pan American Games in Mar del Plata, Argentina.

Contreras won the 500m time trial gold during the 1998 Central American and Caribbean Games, but failed the doping control with Pseudoephedrine and her medal was removed.

Major results

 * 1995
 * UCI Juniors Track World Championships
 * 2nd Individual pursuit


 * 1999
 * Track Cycling World Cup Classics
 * 2nd 500m time trial, Round 1, Mexico City
 * 3rd 500m time trial, Round 3, Valencia
 * 3rd 500m time trial, final individual ranking
 * Pan American Games
 * 2nd 500m time trial


 * 2000
 * Track Cycling World Cup Classics
 * 1st, 500m time trial, Round 3, Mexico City


 * 2001
 * UCI Track Cycling World Championships
 * 1st 500m time trial
 * Track Cycling World Cup Classics
 * 1st Sprint, Round 4, Mexico City
 * 1st 500m time trial, Round 4, Mexico City
 * 2nd 500m time trial, Round 1, Cali


 * 2002
 * UCI Track Cycling World Championships
 * 2nd 500m time trial
 * Track Cycling World Cup Classics
 * 2nd 500m time trial, Round 1, Monterrey
 * 3rd 500m time trial, Round 2, Sydney


 * 2003
 * UCI Track Cycling World Championships
 * 2nd 500m time trial
 * 3rd Sprint
 * Track Cycling World Cup Classics
 * 2nd 500m time trial, Round 2, Aguascalientes
 * 3rd Sprint, Round 2, Aguascalientes
 * 1st 500m time trial, Round 3, Cape Town
 * 1st 500m time trial, Round 4, Sydney
 * 1st Sprint, Round 4, Sydney
 * 1st 500m time trial, final individual ranking
 * Pan American Games
 * 1st 500m time trial


 * 2005
 * Pan American Championships
 * 2nd 500m time trial


 * 2007
 * Pan American Road and Track Championships
 * 3rd Keirin


 * 2011
 * Pan American Road and Track Championships
 * 3rd Team Sprint (with Luz Daniela Gaxiola Gonzalez)


 * 2012
 * Mexican National Track Championships
 * 1st Scratch race
 * 2nd 500m time trial
 * 2nd Keirin
 * 3rd Team pursuit (with Belem Guerrero and Carolina Rodríguez)