In 393 A.D, the 293rd and final Olympic Games were held. In 394, the christian Emperor Theodosius abolished pagan festivals, including the Greek Games as a pagan festival hampering the spread of christianity.
Sport in general will be very frowned upon or prohibited by hatred of the body and duty of mortification of its carnal envelope.
They will not be restored until 1502 years later, in 1896 on the initiative of Pierre de Coubertin, 1Wikipedia, Pierre de Coubertin a republican man who later developed a scouting movement detached from christianity : the French Scouts. 2Wikipedia, Éclaireurs français