Charroes gallop their horses in Mexico. September 23, 2006. "Charreria" is one of Mexico's oldest traditions, a demonstration of courage and style, combined with authentic folkloric dances and Mexican Rodeo. Charrería in Mexico started in Los Llanos de Apan, Hidalgo, where catching bulls by the tail was begun as a sport. The "Association Nacional de Charros" was founded in 1921, making charrería or rodeos the only truly national sport.