The possibility of attaining environmental and social goals through urban and regional planning has long been the subject of research and debate. The current research investigates the precise relations between urban morphology, lifestyles, social-psychological aspects and work-related travel behaviour in terms of travel distance and travel mode. The study area is the Stockholm region. Travel distance and mode were linked to explanatory variables by linear and multinomial regression methods. Results from this study in the form of marginal effects show that urban morphology and demographics have a substantial influence on travel behaviour. However, lifestyles, attitudes and ideologies have significant influence as well. Travel distance is foremost influenced by attitude to travel distance and occupation. Travel mode is foremost influenced by distance to public transport facility and gender. Urban morphology, a designer lifestyle and ideological concerns regarding ecology matter as well. Thus, sustainable travel behaviours can be promoted by spatial planning. As other factors – attitudes, lifestyles and ideologies – also have a substantial influence, the possibilities and limitations of planning to contribute to a sustainable society should be further debated and if possible – clarified.