Despite the evidence demonstrating the importance of physical activity, approximately 50% of US women meet aerobic national physical activity guidelines. There is often a disconnect between successful evidence-based physical activity programs and the translation/dissemination of these programs into community settings; this might be overcome through use of program theory and evaluation. The purpose of this study was to discuss the development of a logic model for a community-based walking program for mothers by providing background on the population and describing program theory, the process of developing the logic model, and logic model components. Participants (N = 86) were mothers (18–64 yr) with a child 26 yr or younger living in her household. Process evaluations, observational, and focus group data were used in a content analysis to determine major themes, informing the logic model. Findings revealed a set of resources needed to complete program activities. These activities led to short- and long-term outcomes. The overarching goal of the program is to improve the overall health status of families and communities. This logic model may have significant public health effect because it can serve as a framework for other communities wanting to develop, implement, and evaluate a walking program for mothers. To the authors' knowledge, this logic model is the first of its kind and may be used by public health practitioners and communities to promote physical activity, specifically walking, in an underserved population.