Considering these elements, this paper is organized as follows. First, we provide an overview of the literature relevant to the study of the senior tourism market segmentation. In this first part, we focus on the senior travel motivations and we introduce a new potential additional segmentation variable: the discrepancy age (the gap between the cognitive age and the ideal age). Doing that way, we indicate one of the roles of the current study: deepen the previous investigation launched by prior researchers, such as Mathur et al. (1998) and Cleaver Sellick (2004), who first investigated the role of behavioural variables and subjective ages to better segmenting the senior travel market. Second, the research methodology, the analyses and the results are developed. We identify four current senior travel motivations profiles and we investigate the role of the youth age and the discrepancy age as discriminant variables for segmenting the travel senior market. We finally generate a multivariate segmentation model combining travel motivations, travel perceived risks, discrepancy age and some useful demographic variables. Then, we discuss these results, which are complementary to the prior research and allow characterizing four opportune current senior segments. Finally, we provide practical guidance for marketers interested in adapting their services offers (or developing new ones) to these distinct segments.