Encounter-based peace education programmes promote social cohesion and motivate youth to become peacebuilders. However, participants struggle to sustain these transformations in conflict contexts. This article draws from interviews and focus groups with alumni from four programmes that brought Pakistani youth to the US and other sources to examine these participants' long-term transformations. It argues that the programmes' emphasis on service-oriented activities led to participants' motivation to improve their communities because of the social capital built through these programmes. Connecting with strangers across conflict differences also resulted in participants' increased openness towards opposing groups. Consequently, alumni implemented projects to benefit their communities in Pakistan but were often unable to explicitly promote social cohesion because of sociopolitical constraints. Despite these challenges, the programmes emphasising community action in the US and in Pakistan increased participants' peacebuilding motivation and helped youth to maintain it as their projects reinforced their attitudinal transformations promoting social cohesion.