The main aim of this study was to determine the basic characteristics of the motivation for practicing CrossFit of recreational CrossFit exercisers, and to determine the relationship between the measured motivation and other socio-demographic or "exercise" characteristics of recreational exercisers. A total of 73 CrossFit practitioners (32 women and 41 men) between the ages of 18 and 60 filled out the adapted SMS-28 questionnaire, the CrossFit motivation questionnaire, for the purposes of this research. At least satisfactory metric characteristics of reliability, homogeneity and sensitivity were established for all motivation scales of the adapted questionnaire. Gender differences were determined in four motivational variables: in the measures of IM – to know (p=0.014), EM - introjected (p=0.02) and total intrinsic motivation (p=0.04), female exercisers have higher evaluations of motivation than male exercisers; in the measure EM – external regulation (p=0.03), male exercisers have higher assessment of motivation than the group of female exercisers. Significant differences were found in four motivation variables between subgroups of exercisers of different chronological ages: the subgroup of the oldest exercisers (age 41 years or older) had lower motivation ratings than the other two subgroups of younger CrossFit exercisers in the measures of IM – to accomplish (p=0.014) and EM - identified (p=0.02), and have lower motivation evaluations than the subgroup of the youngest exercisers (age up to 30 years) in the variables total intrinsic motivation (LSD test p=0.017) and overall motivation for CrossFit practicing (LSD test p=0.02). Significant differences were found in three motivation variables between subgroups of exercisers with different durations of CrossFit training: the subgroup of exercisers who exercise for the shortest time (only one year of CF practicing) have higher IM - stimulation (p=0.045) motivation than the other two subgroups of longer exercisers, and have higher evaluations motivations from the "medium" subgroup of experienced exercisers (those with 2 to 4 years of CF practicing) in the variables: total intrinsic motivation (LSD test p=0.03) and IM – to know (LSD test p=0.04). The findings of this study point to the need for further research into the motivation for practicing of the CrossFit among recreational exercisers, as well as the need to determine the relationships between the variables of motivation for CF practicing and other possible related or important variables (e.g., cohesion, prosocial behavior and satisfaction with one's group of exercisers).