This is a collection of supplementary materials for a systematic narrative review that aimed to synthesise and evaluate the current published literature on interventions combining physical activity and mindfulness training for mental health and wellbeing outcomes. The collection includes the search strategy used in the systematic review database searches and the full review dataset used (i.e., extracted data from eligible primary studies and their risk of bias assessment). The supplementary materials provide insight into the data the research team were working with to extract trends and gaps in the current literature base--both of which are discussed in the published review.