Extra‐high‐frequency audiometry may have a clinical use as an indicator of the traumatic effects of noise. The purpose of this study was to determine if cardiovascular endurance has a relationship to the extra‐high‐frequency thresholds of hearing. Industrial workers (ages 27–30, with normal hearing in the conventional frequency region) exposed to daily noise doses of 85–88 dBA served as subjects. Cardiovascular endurance and extra‐high‐frequency thresholds were determined for 50 subjects. A two‐factor ANOVA (Group × Frequency) revealed no significant differences in the extra‐high‐frequency thresholds of two groups of industrial workers with varying cardiovascular endurance. For 50 subjects, no significant correlations existed between the thresholds of hearing at the extra‐high frequencies and cardiovascular endurance. It was concluded that cardiovascular endurance cannot be used to determine individual susceptability to the noxious effects of noise.