The length of a mediation session can vary depending on the complexity of the dispute, the number of parties involved, and the progress made during the session. The mediator will work with the parties to develop a schedule for the mediation process that takes into account the needs and availability of all parties involved. The mediator may also set deadlines for certain steps in the mediation process, such as the exchange of information or the completion of certain tasks. Ultimately, the duration of mediation will depend on the needs and preferences of the parties, as well as the progress made during the mediation process.