Improving the health and well-being of a community is no simple task for a Coalition. It takes longterm policy strategies for sustaining change in systems and environments. It also takes the necessary community and organizational infrastructure for carrying out those strategies. In short, a Coalition needs a comprehensive plan for sustaining its public health efforts, one that can help it manage internal and external challenges. The Sustainability Planning Guide is a synthesis of science- and practice-based evidence designed to help Coalitions, public health professionals, and other community stakeholders develop, implement, and evaluate a successful sustainability plan. The guide provides a process for sustaining policy strategies and related activity, introduces various approaches to sustainability, and demonstrates sustainability planning in action with real-life examples.