“Runner,” Laura García Alonso’s debut feature, tells the story of a young competitive athlete who suffers a psychotic break while training intensely for a major race. The film, sold internationally by Madrid-based Latido Films , premieres in competition at this year’s Málaga Film Festival. It will be introduced to buyers at Málaga’s Spanish Screenings. Adding to the film’s interest, it has a top-notch production package: Barcelona’s Distinto Films, whose “Deaf” won Berlin’s Panorama Audience