A week-long rapid HIV testing campaign (Flash Test) was organized in 2013 in four regions particularly affected by the epidemic: Île-de-France, Provence-Alpes-Côte d'Azur, Rhône-Alpes, and French Guiana. A questionnaire administered to those tested made it possible to analyze the population reached by this initiative. The analysis covered 8,713 people. The population was predominantly male and young. Thirty-eight percent of participants were born abroad. Men who have sex with men accounted for nearly 15% of the tested population, people who inject drugs for 2.4%, and transgender individuals for 0.3%. Sixty-four percent of respondents had previously taken an HIV test in their lifetime. During the week, 48 people discovered they were HIV-positive (0.55%). Compared to the community-based testing initiatives implemented in 2011, this intervention reached populations particularly at risk for HIV to a relatively lesser extent. Flash Test participants were not particularly distant from the testing system. Finally, the ability to identify HIV-positive individuals was similar to that of the CDAG/Ciddist system, and even lower in French Guiana. The Flash Test initiative likely contributed to mobilizing testing stakeholders and raising public awareness of HIV testing and rapid tests. Nevertheless, analysis of participant characteristics does not reveal any epidemiological added value of this model compared to the existing testing system. (R.A)