Subiza

In the 1980s, the company Potasas de Navarra S.A. went bankrupt due to the depletion of its mineral deposit, coinciding with the discovery of a new site in the village of Subiza — a small settlement with around one hundred inhabitants. These circumstances led to the foundation of Club Deportivo Subiza on 19 October 1984.

Originally a modest initiative, the club wore red shirts with black shorts. In its early years, it remained outside the structure of the Navarre Football Federation, focusing instead on friendly matches, participation in local tournaments such as the Higa de Monreal Tournament, and gradual sporting development. In 1986, the company Potasas de Subiza S.A. was established. Around the same time, the residents of Beriáin — then the most populous town in the municipality of Cendea de Galar — began advocating for municipal independence, supported by their relatively favorable economic situation.

In the early 1990s, the separation of Beriáin from the municipality of Cendea de Galar was nearly complete and was formalized in 1992 when Beriáin became an independent municipality. This left Galar with just over a thousand residents and without any prominent football representation. It was at this time that CD Subiza decided to take a major step by registering with the Navarre Football Federation, which they officially did in 1993. The club began competing in the Primera Regional, where it achieved fifth place in both the 1993–94 and 1994–95 seasons with a modest but well-organized squad.

Drawing primarily from players based in Pamplona and surrounding municipalities, Subiza improved its performance in 1995–96, finishing fourth. The 1996–97 season proved particularly successful, as the club won its group and claimed its first league title. Although they qualified for the promotion play-offs to the Regional Preferente, they were unsuccessful, finishing fourth in the group. However, the 1997–98 campaign saw further progress: Subiza secured a second consecutive league title and finished second in the promotion play-offs, behind CD Etxarri-Aranatz, which was enough to earn promotion to the Regional Preferente.

The club made its debut in Regional Preferente in the 1998–99 season, finishing in 13th place and managing to remain in the division. Retaining much of the same squad for the following season and adding a few reinforcements, Subiza improved its standing with a 7th-place finish, consolidating its position in a league where it had found a competitive rhythm.

Subiza achieved their first-ever promotion to the Tercera División in 2002. On 15 June 2020, the club reached an agreement with CA Osasuna to become their second reserve team, behind CA Osasuna B.