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Associations between driving and physical activity intensities are unclear, particularly among older adults. The aim of this study was to compare the activity levels of adults aged 39 to 70 years across main modes of travel. Data from 90,810 UK Biobank participants were analysed. Travel modes were assessed by questionnaire and physical activity was assessed using accelerometers - small devices that participants wore on their wrists. It was found that compared to car/motor vehicle users, cyclists and walkers had the best activity profiles followed by mixed mode users. For example, people who cycled accumulated 11% more total physical activity, 21 min/day less sedentary time, and 15 min/day more moderate-to-vigorous intensity physical activity than people who reported using a car to get around for non-work journeys. Some of the associations that were observed varied by age, but these differences appeared small. This study provides evidence, based on objective-assessments of physical activity, that walking, cycling and, to a lesser degree, mixed mode use are associated with more optimal activity profiles in adults of all ages.