In 1973, Secretariat, the greatest thoroughbred in horse-racing history, won the Triple Crown. The only horse to ever break the two-minute mark in winning the Kentucky Derby until recent winner Monarchos, Secretariat also pulled off one of the most astounding victories in the annals of horse racing by winning the Belmont Stakes by a record-breaking thirty-one lengths. Now William Nack updates his acclaimed portrait with a new afterword that examines the legacy of one of ESPN's "100 Greatest Athletes of the Century": the only horse to ever grace the covers of Time, Newsweek, and Sports Illustrated all in the same week.