In 1914 Sporting de Mieres was founded, without any link to the Football Federation, and the club disappeared four years later, demoralized by the constant losses. That same year, on 6 July and after a draw to choose the name, Racing Club de Mieres was created, with the team being renamed Caudal Deportivo de Mieres after the Spanish Civil War, as all foreign denominations were forbidden.
In 1946 Caudal first reached the third division, promoting to the second five years later – the Segunda División B category would only see the light of day in the late-1970s. Starting in 1980 and with the exception of one year, the club would spend the following 18 seasons in the fourth level, then play seven out of eight years in the third, being relegated back in 2004.
Caudal won its group in the 2009–10 season – it had already finished first in 2006–07, albeit without promotion – and returned to division three after defeating Jumilla CF in the playoffs. At the end of the 2012–13 campaign, again in the third tier and just one year after promoting, it managed to qualify for the promotion playoffs after the fourth place in the regular season. However, Caudal was relegated again to Tercera División during the next season, but two years later came back to the third tier.