Bernardo Tobón de la Roche was the manager of Radio Pacífico, a station in Cali affiliated to RCN Radio, and had founded La Voz de Pereira in the 1940s. After a congress of radio stations in 1956, Tobón de la Roche was able to secure affiliations for his network from stations of Bogotá, Medellín, Cali, Barranquilla, and Cartagena de Indias. By 1962 Todelar had 24 stations. In 1967 Unión Radio, a group of radio stations of Cali, Pereira, and Bogotá, joined the network. De la Roche's brothers Jaime and Jairo, who also were part of the network, would leave and became executives of rival networks Caracol Radio and RCN Radio, respectively. Todelar had its golden era in the 1960s and 1970s, broadcasting livesports events such as the Vuelta a Colombia, and the 1966 FIFA World Cup, or radioplays like La ley contra el hampa, a crime drama, or the Colombian version of the Mexican hit Kalimán.; some of these dramas were broadcast from Cali and lasted into the mid 1990s. Todelar would later expand to FM. In 1977, Todelar had 344 stations. After these years, Todelar has seen itself in disadvantage vis-à-vis rival networks RCN Radio and Caracol Radio, being in a slow decline since the 1990s; since Todelar is essentially a media company it has found difficult to compete in equal terms with those networks, owned by huge corporate conglomerates. Some stations have left the network and some timeslots, specially in the AM stations, are filled with paid programmes by shamans, naturist medicine laboratories and esoteric or religious groups since the late 1980s.
Main networks
Circuito Todelar de Colombia: the main network, broadcasting news, sports, and events. Its flagship station is La Voz de Bogotá. Until 2017, the flagship station was Radio Continental.
La Z: devoted to salsa music; its format is as 2015 preserved only by the Cali affiliate, HJBT. The Bogotá station changed to a Latin pop format and the Medellín station broadcasts reggaeton.
La 92 : devoted to pop and reggaeton; it simulcasts Édgar Artunduaga's morning news programme. It replaced Spanish-language pop and rock station El Sonido de la Ciudad, salsa music network La Z and balada en español network Sonorama Estéreo.
La X: youth programming— English-language rock and pop in Bogotá, electronica in Medellín, pop and electronica in Cali. Formerly known as Todelar Estéreo.
