Wikipedia
Daciad
The Daciad was a multi-sport competition held every two years in the Socialist Republic of Romania meant to encourage mass participation in amateur sports. Only six editions were held, the first being held in 1977-1978, when 6 million people participated (of which 2000 were selected to participate in professional sports). The last Daciad was the Winter Daciad of 1989; it was disbanded after the Romanian Revolution.