Los desafíos presents three separate stories that are linked by an American presence in Spain in the 1960s, with Dean Selmier playing the role of the American male in all three.
Unfortunately the movie The Challenges is not yet available on HBO Max.
| Directing | Víctor Erice | Director |
| Directing | José Luis Egea | Director |
| Directing | Claudio Guerín Hill | Director |
| Costume & Make-Up | María Carmen Alberdi | Assistant Makeup Artist |
| Crew | Luis Cuadrado | Cinematography |
| Art | Pablo Gago | Set Decoration |
| Costume & Make-Up | Cristóbal Criado | Makeup Artist |
| Editing | Pablo G. del Amo | Editor |
| Production | Primitivo Álvaro | Production Manager |
| Directing | José Luis Ruiz Marcos | Assistant Director |
| Directing | Francisco J. Querejeta | Second Assistant Director |
| Art | Pablo Martínez Bris | Property Master |
| Camera | Laureano López | Still Photographer |
| Art | Salvador Augustín | Assistant Set Decoration |
| Camera | Teo Escamilla | Camera Operator |
| Directing | José Miguel Hernán | Script Supervisor |
| Art | Jesús Mateos | Props |
| Editing | Rosario Sáinz de Rozas | Assistant Editor |
| Costume & Make-Up | Angelines Castro | Seamstress |
| Camera | Ángel González | Assistant Camera |
| Writing | Claudio Guerín Hill | Writer |
| Writing | Víctor Erice | Writer |
| Writing | Rafael Azcona | Writer |
| Writing | José Luis Egea | Writer |
| Production | Elías Querejeta | Producer |
