Here is a brief synopsis of what actually led to the demise of Mexican prominence in road racing and marathoning. The same phenomenon that led to the end of the competitive American professional road racer also affected the Mexicans. There was a time prior to 1992 when both Americans and Mexicans could be consistently successful on the American roads, but following the 1992 World Cross Country Championships, which were in Boston that year, nothing has been the same. I believe that Arturo Barrios was a huge inspiration to a number of Mexicans along with Rodolfo and Jose Gomez. There were races in El Paso, Phoenix, and Florida that were amongst the best in the world at that time and they were easily accessible to the Mexicans, but once the Kenyans started coming in large numbers and staying here in Boulder, Albuquerque, Flagstaff, and other assorted locations, they monopolized the prize money and I think this strongly discouraged the Mexicans, along with the next generation of potential American professional road racers. You couple this with Barrios becoming an American citizen and the influx of Africans into the Mexican and Central American road races, a lot of incentive was lost. The great Mexicans like Marcus Barreto, German Silva, Dionicio Ceron, Amando Quintanilla, Salvador Garcia, etc. unfortunately are stars of the past. Another factor was the Polish coach Kepcka who was the Mexican National Coach may have retired leaving a big void in coaching knowledge. Another key factor that bolstered Mexican running was the number of foreigners that would go to train at the Desierto de los Leones (Desert of the Lions) near Mexico City. You don't hear about world class runners going to train there anymore. This is just my take on the demise of Mexican running. It may or may not be completely correct.