The main promoter of this hobby was Julián Comet, a French citizen who had settled in the city at the end of the 19th century.

A streak of wins against regional and foreign rivals encouraged the cyclists to compete in the upcoming Copa del Rey in 1909, but in those times, the teams who had not been legally registered for more than a year could not play official matches, so in order to play in the 1909 Copa del Rey, they borrowed the license from the Club Ciclista de San Sebastián, under whose name they presented themselves in the tournament.

[2] And this team excelled all expectations by surprisingly reaching the final after they unexpectedly, but convincingly defeated the powerful Athletic Club in the quarter-finals by a score of 4–2, with a hat-trick from George McGuinness, and then beat Galicia FC 2–0, with both goals also being netted by McGuinness, who was proving to be the star of the tournament.

[4] For its construction, they had to demolish the velodrome that occupied the place, which had been built a few years earlier after great efforts by the Cycling Club and its president, Julián Comet.

Annoyed by the treatment he received from the footballers he had helped a few years earlier, Comet launched a famous curse that was long remembered in San Sebastian: "Real will never be champion".