About Guadalajara B

Club Deportivo Guadalajara, S.A.D. "B" is the reserve team of CD Guadalajara, a Spanish football team based in Guadalajara, in the autonomous community of Castile-La Mancha. They play in Tercera Federación – Group 18, holding home games at Estadio Salto del Caballo, with a seating capacity of 5,300 spectators.

Original history of Guadalajara's reserve side trace back to the 1970s, when a club named CD Guadalajara Promesas existed. They played for one season in the Primera Regional Preferente Castellana (1974–75), and ceased activities in 1986, after the departure of all clubs from Castilla-La Mancha from the Federación Castellana de Fútbol.

In 1990, a club named Patronato Deportivo Municipal Guadalajara was founded. The club was incorporated into the structure of CD Guadalajara in 1993, being named CD Guadalajara "B", but ceased activities in the following year.

In 2001, Guadalajara took newly-created side Club Deportivo Esperanza Salesianos as their farm team, and also renamed the side to Guadalajara B in the following year. However, they again ceased activities in 2003.

Back to action in 2007, Guadalajara B achieved two consecutive promotions to reach Primera Autonómica Preferente. In 2018, one season after suffering relegation, the club recovered their original name of Guadalajara Promesas, only returning to their former name of Guadalajara B in 2024, after a promotion back to the Preferente. In May 2025, the club achieved a first-ever promotion to Tercera Federación.