Public transportation in Jakarta is one of the leading facilities which currently being improved by the local government. Transportation facilities in Jakarta are now being strived to be integrated. However, not all areas in Jakarta have access to public transportation. This study aim to show how public transportation, especially in Central Jakarta, can be reached by pedestrians. This research used a geographic information system-based approach for assessing pedestrian accessibility in metropolitan areas, focusing on access to public transportation stops and stations. This methodology attempts to provide integrated methods to urban planning and mobility planning and decision-making assistance, with the dual goals: (1) supporting sustainable and non-motorized mobility, and (2) also boosting the appeal of public transportation. There are two main steps in method. First, identify the pedestrian walking zone of urban spaces around public transportation nodes; and second, mapping the access times to create a detailed pedestrian isochrones, and calculate how residents (or how many opportunities and facilities) are well served by the public transportation system to measure accessibility levels. This study indicates that some of the main areas already have integrated public transportation facilities, but the stopping distance is quite burdensome for pedestrians to access.