This research investigates the potential of walking and strategies for enhancing the walking network in District 3 of Tehran Municipality, aiming to boost public health and urban livability through increased physical activity. A comprehensive model was developed using Geographic Information System (GIS) data to evaluate walkability indexes across different urban areas. The study integrates multiple criteria decision-making tools and ARCGIS to map out walkability, employing ten environmental factors that significantly influence pedestrian activities. Findings indicate that urban design and infrastructure play critical roles in encouraging walking. The model's accuracy in quantifying walkability demonstrates the effectiveness of merging analytical techniques with GIS capabilities, providing a robust tool for urban planners and decision-makers. This approach not only aids in identifying areas with poor walkability but also proposes design improvements to enhance pedestrian pathways and connectivity. The research contributes to the growing field of sustainable urban planning by offering a detailed assessment of the physical and infrastructural elements that promote walking. By facilitating targeted interventions, the proposed model aims to foster a healthier, more active community in Tehran's urban landscape. This study underscores the importance of strategic planning and the application of technology in creating conducive environments for physical activity, reflecting on its implications for public health policy and urban development.