CarnaUOL was born in 2014 and had as its theme the street carnival blocks in São Paulo and Rio de Janeiro editions. In 2015, the main attraction of the event held in São Paulo was Jorge Benjor. In Rio de Janeiro, the main attraction was Arlindo Cruz.
In 2016, CarnaUOL turned into a festival, a mass event that received about 12,000 people at Urban Stage in São Paulo. The main attractions of the event were Ivete Sangalo and Banda Eva. In Rio de Janeiro, the event remained in the party format for about 4,000 people with attractions such as the singer Ludmilla.

In 2017, the event in SP received over 20,000 people in two days of revelry with national and international attractions, such as Anitta, Durval Lellis, Matheus and Kauan, Banda Eva and Alok. It was the debut in Sapucaí, Rio de Janeiro, one of the biggest and best carnival boxes. 

In 2018 the festival became known for its great mix of musical genres (pop, funk axé, sertanejo, electronic). The event which took place at the Estádio do Canindé and was attended by over 35,000 people. In the Rio edition, CarnaUOL joined the Camarote N°1, one of the main Sapucaí, to provide a high quality party for revelers. 

In 2019, more than 40,000 people attended the CarnaUOL São Paulo edition. The Arena CarnaUOL, located in front of the Anhembi sambodrome, featured attractions such as the sisters Maiara and Maraisa, singer Ludmilla and DJ Alok. CarnaUOL , Rio de Janeiro edition, joined, for the second time, the Camarote N°1.

In 2020, the seventh edition of the festival received names like Claudia Leite, Banda Eva, Simone e Simaria, Luisa Sonza and the singer Iza. The event in SP had a new venue: the Jockey Club, one of the most traditional venues in the capital. In Rio, the Camarote CarnaUOL Nº1 offered again the best experience of Rio’s carnival in three nights of celebration.

The eighth edition of CarnaUOL, came back with everything in 2023! The festival received 21 thousand people, this time, at Allianz Parque, who enjoyed a star line-up and 11 hours of partying with the best of funk, sertanejo, axé, pop, electronic music, forró and more. Among the attractions were: the Barões da Pisadinha, the band Baiana System, Gloria Groove, Dubdogz, Luísa Sonza, Claudia Leitte and Zé Neto and Cristiano.