Substantial research is underway on the relation of the physical surrounding to active living, much of it using objective physical measures of the environment. Though important, this approach will produce an incomplete picture, because human perceptions shape behavior. Thus, it is important to learn about human perceptions of environmental factors which are associated with increased or decreased likelihood of physical activity. This workshop surveyed and evaluated the various options for measuring perceptions of specific environments and alternatives for study designs and methods. It used examples from the environment-behavior field to illustrate methodological choices; recommended and demonstrated those approaches of most relevance for active living research.