Purpose: To investigate the physiological characteristics of freestyle snowboard and freeski athletes and explore potential differences between males and females. Methods: National-team athletes, snowboard (9 males, 21 [2.3] y; 8 females, 20 [4.1] y) and freeski (10 males, 21 [2.1] y; 8 females, 18 [2.2] y), underwent physiological assessments: maximal oxygen uptake (${\dot{\mathrm{V}}\mathrm{O}}_2\text{max}$; indirect), countermovement-jump height, drop-jump (DJ) height, DJ contact time, reactive strength index, absolute peak force (PF_abs), and relative peak force. Differences were analyzed using multivariate analyses of variance Wilks lambda (Λ) and magnitude with partial-eta squared (${\eta }_{\mathrm{p}}^2$). Pairwise comparisons and the impact of sex and sport were analyzed with univariate tests, utilizing Cohen d. Results: No physiological differences were found between snowboard and freeski (Wilks Λ = 0.8, P > .251, ${\eta }_{\mathrm{p}}^2$ = .169). Sex differences were observed (Wilks Λ = 0.2, P < .001, ${\eta }_{\mathrm{p}}^2=.79$), without an interaction between sex and sport (Λ = 0.8, P > .449, ${\eta }_{\mathrm{p}}^2=.120$). For snowboard, sex differences included ${\dot{\mathrm{V}}\mathrm{O}}_2\text{max}$ (P < .001, d = 1.04), countermovement-jump height (P < .001, d = 2.5), DJ height (P < .001, d = 1.45), DJ contact time (P < .001, d = 0.36), reactive strength index (P < .001, d = 1.36), front-limb PF_abs (P < .001, d = 1.77), rear-limb PF_abs (P < .001, d = 1.36), front-limb relative PF (P < .003, d = 0.88), and rear-limb relative PF (P < .021, d = 0.65). In freeski, differences included ${\dot{\mathrm{V}}\mathrm{O}}_2\text{max}$ (P = .005, d = 0.81), countermovement-jump height (P < .001, d = 1.3), DJ height (P < .001, d = 1.17), DJ contact time (P < .040, d = 0.54), reactive strength index (P < .001, d = 1.0), left-limb PF_abs (P < .001, d = 2.2), right-limb PF_abs (P < .001, d = 1.88), left-limb relative PF (P < .001, d = 1.1), and right-limb relative PF (P < .001, d = 1.33). Conclusions: Differences between the sexes, rather than between sports, explained the largest variance. A broad concurrent training approach with the aim of developing resilient athletes is likely warranted while acknowledging and adapting to individual needs.