This study examines religious experiences (REs) and their transformative aftereffects (TAs) among pilgrims on the Camino de Santiago. Analyzing 32 travelogue testimonies and survey data from 501 participants, it identifies three key dimensions of post-RE transformations: heightened Unity and Love, a strong commitment to the Apostolic Mission, and expanded Spirituality, Wisdom, and Detachment. Pilgrims report a shift toward greater love, unity with nature, and sharing insights, as well as increased spirituality and reduced materialism. The study finds significant correlations between TAs and individuals prioritizing their relationship with God and regular religious practices, highlighting REs’ impact on societal values and beliefs.