The Cto. Aguas Abiertas Castilla La Mancha is an open-water swim race held in Ruidera, Ciudad Real, Spain. It is part of the Castilla-La Mancha open-water championship series and includes three distances: 800 m, 3 km, and 5 km.
The race provides swimmers with options ranging from a short 800 m course to longer swims of 3 km or 5 km. Based on the available information, it appears to be a focused open-water event, not a large multi-sport festival, with the location and distance options being its primary features.