The text size did not have an effect on walking speed. Regarding previous research results, our outcome conforms to these results. There seems to be a specific amount of cognitive load having to be shared between the navigational and the reading task. This amount can be named by the reduction in walking speed, which was at about 1 km/h. As well as for the walking speed, there was no main effect of text size on the walking errors users made. The results were quite random and no tendency was observable except for the times users stopped walking. Regarding workload, the subcategory ‘mental demand’ was the only measure that reached significance. Users found it easier to read passages of text with larger letters.