Sightline Institute

“A human on a bicycle is more efficient (in calories expended per pound and per mile) than a train, truck, airplane, boat, automobile, motorcycle, skateboard, canoe, or jet pack. Not only that, bicycling is more efficient than walking, which takes three times as many calories per mile. In fact, pound for pound, a person on a bike can go farther on a calorie of food than a gazelle can running, a salmon swimming, or an eagle flying.”