Religious tourism is mostly considered as the oldest form of people’s travel (Blackwell, 2007). Pilgrimage tours are considered as one types of pilgrimage tourism, really has been welcomed by many people in the world. Muslim, Christian and other pilgrimage sites seem to be attracting increasing numbers of visitors .apparently religious motivations are the most important reason to choose religious tours ,but studies show this is not the only one and some factors contribute to choose and request this kind of travel.in this case we Focus on effective sub factors in selection religious tours Which has been held in Qom for ten days in 2020 .by Structured interview we collected data and analyzed them by thematic method. result shows different effective sub-factors like Learning religious Contents, Familiarity with the historical contexts of sacred places, Familiarity with the historical context of the Geographic Area around holy places, Familiarity with the historical narrative about each places, Familiarity with historical rituals related to each places and Awareness of vehicle safety are Involved.
