The needs of older workers are increasing with the advancement of the aging society, and their health consciousness is also rising. Walking is a useful way of maintaining health and wellness in the elderly. Walking is also carried out in tours at tourist sites. It leads to health maintenance and the improvement of the willingness to work as well as satisfying the thirst for knowledge at a visited site. The limit of number of steps should be understood accurately at that time. The number is derived from data measured over one year in this study. The subject was a 65 year-old male. The limit in the number of steps was about 12000 based on this experiment. He plays tennis one or twice a week and is in relatively good health. A walking experiment was carried out in a good viewing location, and data such as vital signs were collected. The experiment was carried out within the limit of step number. It was found that there was a strong correlation between the number of steps and the amount of physical exertion. The mood grade of the subject decreased after over an hour, and he became a bit tired of walking. It is suggested that walking for about 90 min is appropriate for a cheerful older person.