This study examines The Migrant Trail walk in the context of social movement theory and argues for the importance of the body. The Migrant Trail is a week-long, 75 mile walk taken annually by border justice activists at the U.S.-Mexico Border. Its understood purpose as a social movement tactic is to protest border policies that lead to migrant deaths, raise awareness of the crisis of death on the border, and mourn those who have lost their lives. This study utilizes surveys and in-depth interviews to explore what the Migrant Trail achieves for the participants actually undertaking the walk. On the Migrant Trail, embodied experience complements the fact that participants are movement allies rather than direct beneficiaries of the border justice cause. It is argued that embodied experience builds compassion, solidifies commitment and creates a strong sense of collective identity amongst walkers. Moreover, these effects are highlighted as being of particular importance because of the specific challenges that allies face fitting into a social movement context.