70 years ago Košice Witnessed the world´s largest marathon. The 1947 was the unique year for Košice also in other way. In that year there were 54 marathons organized worldwide and none of them had more athletes crossing the finish line than Košice. To be specific, in Košice it was 75 runners while in Boston it was only 41. Košice marathon can be considered to become the largest marathon of 1947 in the world.