The aim of this study was to determine the effect of journey duration, in commercial transports from rearing to growing–finishing farms, on the stress levels of piglets using a combination of physiological welfare indicators. According to the results obtained by means of different physiological indicators, commercial transports from rearing farms to growing–finishing farms are generally a stressful event for weaned piglets. Nevertheless, the journey duration did not show a consistent effect on piglets, it therefore being possible that their response to transport differs from that of older, slaughter pigs.