Climbing system and method for operating a climbing system

A climbing system, comprising:

• at least one climbing rail guided on at least two climbing shoes, the climbing shoes capable of being fastened to and/or in a hardened concreting section, and the climbing shoes being configured to guide the climbing rail and to at least hold said climbing rail with respect to a climbing direction, and
• an actuator,
• wherein the at least one climbing rail comprises at least one first and one second rail part, the first and the second rail part being arranged one behind the other when viewed in the climbing direction, in that the first and the second rail part can each be guided and held by means of one of the climbing shoes, and
• in that the actuator is configured to increase the distance between the first and the second rail part in the climbing direction in order to move the first rail part while being supported via the second rail part at the climbing shoe away from the second rail part, or decrease the distance to climb the second rail part along the climbing direction, when the first rail part is held in its associated climbing shoe.