Introduction – Athlete burnout is a growing concern in sports psychology. However, the joint associations of stress, harmonious passion, and obsessive passion with burnout outcomes, particularly across burnout dimensions, have received limited attention. Methods – This cross–sectional study examined how stress, harmonious passion, and obsessive passion predict overall burnout and its three main components using survey data from 345 regular exercisers. Results – Multiple regression analyses revealed that stress, obsessive passion, and harmonious passion significantly predicted 'exhaustion' (R² = .21): stress and obsessive passion were significant positive predictors (β = .16, p = .001; β = .34, p < .001), while harmonious passion was a strong negative predictor (β = –.43, p < .001). For “reduced sense of accomplishment”, stress and harmonious passion were significant predictors (β = .24, p < .001; β = −.34, p < .001; R² = .16), whereas obsessive passion showed no unique effect. Regarding “sport devaluation”, all three predictors were significant (R² = .24): stress and obsessive passion were positively related (β = .17, p < .001; β = .22, p < .001), while harmonious passion was negatively associated with devaluation (β = −.50, p < .001). Discussion – These findings suggest that pressure and passion orientations can significantly influence regular exercisers' susceptibility to burnout. Reducing stress and fostering harmonious passion may help protect regular exercisers from burnout.