This paper analyzes the construction of urban spatiality in Os meninos do Lago da Redenção (2025), by Gustavo Rodrigues, focusing on the representation of the city of Porto Alegre and on the relationships between space, social inequality, and racism within the narrative. Based on the reflections of Percy Lubbock, Osman Lins, and Umberto Eco regarding fictional spatiality, this study understands the city not merely as a setting, but as a structural element of the narrative itself. For the analysis, maps were created using Google Maps in order to identify the locations mentioned throughout the novel and the routes taken by the characters. The study demonstrates that the Porto Alegre portrayed in the novel reveals a cartography marked by social and racial divisions, in which peripheral characters circulate under constant surveillance and symbolic exclusion. Furthermore, the paper discusses the representation of peripheral spaces as territories of belonging and affection, challenging stigmatizing views of urban peripheries. It concludes that the novel uses the city as a critical tool to problematize structural racism, the criminalization of poverty, and inequalities within contemporary urban experience.