What movie depicts a thinly veiled Ernest Hemingway and F. Scott Fitzgerald during the "running of the bulls"?

The Sun Also Rises is a 1957 film adaptation of the Ernest Hemingway novel of the same name directed by Henry King. The screenplay was written by Peter Viertel and it starred Tyrone Power, Ava Gardner, Mel Ferrer and Errol Flynn. Much of it was filmed on location in France and Spain in Cinemascope and color by Deluxe. A highlight of the film is the famous "running of the bulls" in Pamplona, Spain and two bullfights.

Hemingway began writing the novel on his birthday (21 July) in 1925, finishing the draft manuscript barely two months later in September. The book was published in 1926 The basis for the novel was Hemingway's 1925 with F. Scott Fitzgerald trip to Spain. The setting was unique and memorable, showing seedy café life in Paris, and the excitement of the Pamplona festival, with a middle section devoted to descriptions of a fishing trip in the Pyrenees.

Zanuck hired Peter Viertel to write the script. Viertel later reflected:

"The long lapse of time since the book was published will not cause it to lose its value. The story is ageless. It should renew its impact for our modern generation. It is fascinating in its impressions of Europe after World War I, because so many of these impressions are duplicated again today."