This volume is the third in a three-volume work that is dedicated to long-term future scenarios for the metropolitan area of Graz-Maribor, with three Styrian and three Slovenian regions on the NUTS 3 level being examined in detail. After Part A provided a detailed analysis of the status quo of the regions, and Part B executed frameworks and methods, Part C now presents actual results of the study. This third volume presents in detail the three main scenarios for this international carriage space and focuses on the main parameters in the areas environment, economy, and human impact.