The aims of the present study were to adapt into Spanish and examine the construct validity of the Coach-Sport Relationship Questionnaire (CART-Q). A total of 162 sports(wo)men (43.2% women), players of differente sports, were between 16 and 59 years old (M = 26.41, SD = 8.98), made up the sample. A confirmatory factorial analysis, revealed a trifactorial structure. Indexes of goodness-of-fit (GFI: .951; CFI: .890; TLI: .952 and error (RMSEA: .078; RMR: .067) were adequate. Regarding gender and level differences, professional sportswomen were significantly closer to their coaches than the rest of the participants. Results support the use of the instrument in the context of Spanish-speaking sport relationships. Gender and level differences need to be taken into account for the improvement of athletes’ relational satisfaction.