Club Deportivo Tropezón is a football team based in Tanos, Torrelavega in the autonomous community of Cantabria. Founded in 1983, it plays in the Tercera División league, group 3. Its stadium is Santa Ana with a capacity of 1,500 seats.
El Tropezón was founded in 1981 by a few young neighbours from Tanos. Their intention was to create a "Cultural, Sport, Social and Gastronomic" club and to name it "El Tropezón", the club has been promoting aspects ever since it was founded and continues today.
During the first years of the club, the team played in the Primera Regional and Regional Preferente leagues, in which the team played for 7 years.
In the season 1990/1991 the team was promoted to Tercera División league, starting a new era for the club. For another 7 years they will remain in this category. In the 94/95 season, the team plays its first promotion series. The team wins the 96-97 and 97-98 leagues, finally achieving the promotion to Segunda División B.
The team started its first year in Segunda División B playing the field they rented until, on 29 November 1998 they were relocated in the newly open "Santa Ana". The limited budget and the inexperience relegates the team back to Tercera División for the season 1999-2000. The 1999-2000 would last only another year after finishing second in the league and winging in Guecho against the historic Arenas Club in the promotion series.