"Runaway" is often considered a unique example of gothic fiction. Within the gothic genre, the story is a prominent example of the regional subgenre Southern Ontario Gothic. This subgenre describes a group of works produced in the region, often grappling with the day-to-day reality of Canadian rural life. While less overt than typical gothic fiction, the story has a dark, haunting tone.
The suspicion surrounding Flora's disappearance—as well as references to violence—cast a shadow over the narrative. "Runaway" cultivates a feeling of looming darkness and mystery typical of the gothic genre. The setting in particular contributes to its gothic bent. The isolated setting of the story is characteristic of gothic works and heightens both Carla and the reader's feeling of entrapment. Like other protagonists in gothic literature, Carla grapples with loneliness produced by her desolate surroundings and limited social world.
In addition to its overall gothic impression, the story features specific references to gothic tropes. When Flora suddenly reappears, she is described as an "unearthly" creature emerging from the fog. Clark first calls her an "apparition," and Sylvia repeats the description in her letter to Carla. The word "apparition" echoes the frequent representation of supernatural beings in the gothic literary tradition. Flora quickly reveals her true nature: she is but a small, white goat. By employing eerie, majestic language, Munro parodies the common gothic tope.