Business travel, and long-distance business travel in particular, has received much less attention in research than home-to-work travel. This article explores some determinants of the frequency of long-distance business travel. It focuses on the influence of two parameters that have been little studied: the individual's socio-occupational group and the workplace location. The data used were provided by the 2008 French National Transport and Travel Survey. Following a review of the literature, a Poisson regression is performed on the frequency of long-distance business trips. The most significant determinants are socio-occupational category, income, gender and the urban or rural nature and size in terms of the number of inhabitants of the area of location. In particular long-distance business trip frequency is lower in the Paris urban area than in all the categories of urban areas as well as rural areas because of the highly centralised organisation of economic activity and the transport network in France.