It's hard to determine an exact length as it depends on various factors like the complexity of the plot and the way it's told. But some of the longest and most epic stories can span thousands of pages or hours of narration.
The filming locations for The Greatest Story Ever Told included places like California, New York in the US, and parts of France and Italy in Europe. The diverse settings added to the authenticity and grandeur of the movie.
It's hard to say if Star Wars is objectively the greatest story ever. It has elements like memorable characters, epic battles, and a rich universe, but there are countless amazing stories out there, and greatness can vary from person to person based on factors like genre preferences and emotional connections.