In this presentation, we describe the creation, implementation and evolving impact of a pan-Canadian research collaborative led by the late Eric Crighton, a beloved health geographer and passionate advocate for environmental health in Canada and globally. Through the story of one of his greatest career legacies, we offer insights into Eric’s noteworthy dedication to collaborative and intersectoral approaches to health geography and children’s environmental health protection, exemplified in his groundbreaking work in establishing the Prenatal Environmental Health Education (PEHE) Collaboration. Launched in 2014, PEHE research has aimed to improve the understanding of factors that promote and inhibit the uptake of equitable prenatal environmental health preventive care activities across diverse prenatal care, community, occupational and environmental contexts in Canada. A defining feature of the PEHE Collaboration research is the direct engagement of professional healthcare associations (physicians, nurses, midwives, public health) alongside civil society organizations, research institutions, and community members with grounded expertise of environmental health inequities. Through collaborative research, the PEHE Collaboration has nurtured a multi-disciplinary consortium of experts and advocates united around a shared goal of improving prenatal environmental health education in Canada.