MTB San Ciro is a mountain bike event held in Zarzuela, a village in Spain’s Cuenca province. It is scheduled for September and provides short and long route choices. One listing indicates 17 km and 32 km rides, while another race page specifies longer 42 km and 68 km distances.
The event is managed by Cronomancha and is known as MTB San Ciro Zarzuela. The Roman numeral XII suggests it is at least in its twelfth year. The participation is limited and has a local character: the longer route attracts the majority of participants, the shorter route offers a more accessible choice, and the e-bike category listed had no registered participants in the data available.