Guru Nanak is traditionally described as undertaking four major Udasis, or missionary journeys. These journeys took him in the four cardinal directions and are central to traditional accounts of how he shared his teachings across South Asia and beyond.
The first journey is generally associated with eastern regions, including places such as Haridwar, Varanasi, Bengal, Assam, and Jagannath Puri. The second is traditionally described as a southern journey reaching areas of central and southern India and Sri Lanka. The third went north toward the Himalayas, Tibet, and related regions. The fourth traveled west toward Mecca, Medina, and Baghdad.
Bhai Mardana is traditionally said to have accompanied Guru Nanak on several journeys, playing the rabab while Nanak sang hymns and held discussions with religious figures. The Udasis were not simply sightseeing tours; they represented preaching journeys centered on remembrance of God, honest work, sharing, and opposition to empty ritual and caste pride.
The number four is the conventional quiz answer, though historians caution that the routes, dates, and details come largely from later Janamsakhi traditions and remain debated.