In recent years, action on sustainability has been highly influential around the globe and many now recognize the importance of individual and social learning for inspiring action and achieving sustainability outcomes. Transformative learning theory has been criticized, however, for insufficient development of the link between learning and action. The purpose of this paper is to deepen our understanding of the learning-action cycle among adult learners in the sustainability context. We consider this through insights from two studies in Kenya and Canada, utilizing a qualitative approach. Both studies employed semi-structured interviews as their primary data collection instrument and used other tools such as focus groups and journal writing. Three broad nodes of social action--individual, interpersonal and collective--are identified and defined based on the data collected. Results show that while all three types of action were evident in the outcomes of participants, individual social action was the most common and collective social action was the least. Barriers to applying learning in action are also derived from the data, including situational, personal, interpersonal, sociocultural and environmental obstacles. Factors that assist in overcoming such barriers include community support networks and skills training.