The aim of this paper is to compare residents' perceptions of the negative impacts of hosting the Copa América de Fútbol (CAF) before and after the event in Chile. The perceptions of the residents of two host cities (Concepción and Viña del Mar) were consulted at two times: one month before the celebration of the event and one month after the conclusion of the event. An initial scale of 16 items classified in the following four areas was used: social impacts (six items), political and administrative impacts (three items), environmental and socio-cultural impacts (five items) and economic impacts (two items). The results showed that the residents of the two host cities who were consulted rated the impacts more negatively before the event than after it. This change in the perceptions of the residents of the two cities was more pronounced in the economic, social and socio-cultural and environmental impacts, while it was not as prominent in the political and administrative impacts. On the other hand, the residents of Viña del Mar more strongly highlighted the negative impacts both before and after the CAF.