Heritage plays a pivotal role in sustainable tourism development along pilgrimage and historical routes, shaping the identity and character of these places. This study aims to investigate the relationship between heritage and tourism along the Darb Zubaydah pilgrimage route in Saudi Arabia, exploring strategies for developing sustainable tourism that preserves cultural and natural heritage while promoting local economies and community engagement. This research employs a mixed-method approach, integrating data collection and observational research along the Darb Zubaydah route, the main historic Hajj pilgrimage route connecting Kufa in Iraq to Makkah in Saudi Arabia. The chosen case study is analyzed through four heritage sustainable criteria: cultural, environmental, spatial, and economic development, through a cross-sectional analysis of the aspects related to safety measures and risk management. The results demonstrate that including the four criteria in the development of the pilgrimage route leads to defining strategic solutions to enhance this tourist trail for pilgrims, promoting the cultural landscape and heritage by strengthening the sense of identity via a sustainable approach. This study wants to contribute to Vision 2030 to enhance the development of tourism by revitalizing the Islamic, Arab, and national cultural heritage, offering insights into sustainable tourism practices that can be applied to other cultural routes globally.