Have we reached the boundaries of what can be achieved in sports and building design? The answer is definitely “NO”. This course contains basic and applied lectures on sports and building aerodynamics. The basic lectures consist of basic aspects of fluid flow, wind tunnel testing and Computational Fluid Dynamics (CFD). The applications either focus on sports aerodynamics or on building aerodynamics, and in one exceptional case on the combination of both. Sports applications include the 100 m sprint and cycling aerodynamics. Building applications include wind comfort and wind danger, wind-driven rain, wind energy in the built environment, adaptation of buildings and cities to climate change and air pollution. This course is intended for anyone with a strong interest in these topics. Key fields addressed are urban physics, wind engineering and sports engineering. Key societal challenges addressed are health, energy and climate.