Lance Armstrong will retire the day after this year's Tour de France. The rumor mill this year started off trying to guess which races Armstrong would be racing this year, but this soon became overwhelmed by retirement rumors after being quoted as saying "Four months and it's over." Given all the challenges left unfulfilled (Giro d' Italia, Vuelta a Espana, hour record), it'll be sad to see him go, but I hope that the nascent US cycling events that he helped grow will continue to blossom even in his absence.