The aim of our study was to explore the barriers and facilitators that teachers, principals, and parents face when adapting to COVID-19 pandemic scenario in terms of promoting toddlers' physical activity (PA). Thirty-four (20 teachers and principals, and 14 parents) semi-structured qualitative interviews were conducted from October 2020 to March 2021. The socioecological model has enabled the identification of barriers and facilitators, some of which are related to the pandemic and others which are not. The main results suggest that upon reopening the ECEC institutions, regarding environmental barriers, educators mentioned the impact on the use of space, and parents, the modification of daily activities generated by COVID-19. However, educators also considered that the presence of suitable spaces in the school for practicing PA was a facilitator. At the intra- and interpersonal level, facilitators of PA that were unrelated to the pandemic included, for parents, the predisposition of children to be physically active and their own function as role models, and for educators, the curricular practices themselves. At an environmental level, the risk of danger in the traditional classroom plus bad weather were considered barriers by educators, while parents mentioned difficulties accessing outdoor space and the poor suitability of indoor spaces. Our results suggest the simultaneous analysis of the perceptions of different actors in the educational environments offers a broad vision of the ecological alternatives for offering children opportunities for PA in these difficult times.