“Cala Mariolu”, on Sardinia’s eastern coast, is globally acclaimed as the second-best beach for its pristine beauty and unique atmosphere. However, its inaccessibility limits tourist flow, raising the question: can sustainable tourism coexist with preserving such fragile environments? The beach lies 14 km from the nearest town, Baunei, 90 km from the nearest city, Nuoro, and over 80 km from airports in Olbia and Cagliari. Crucially, the absence of efficient public transport makes it nearly unreachable without private vehicles. This study explores a balanced approach to tourism and conservation by analysing accessibility patterns while maintaining the site’s natural integrity. It employs fractal analysis—an effective method for understanding complex spatial systems—to assess road networks and propose scalable transport solutions. Using QGIS and Fractalyse, the research compares the fractal dimensions of Nuoro and Baunei municipalities, simulates route options from major island entry points, and evaluates public transport potential. The study aims to identify the scaling complexities of most sustainable routes, recommend eco-friendly transport alternatives, and outline phased accessibility strategies. By integrating spatial analysis with sustainability goals, the research offers valuable insights into responsible tourism planning for environmentally sensitive destinations like Cala Mariolu. The findings could support policy decisions promoting visitor access and long-term ecological preservation.