romeo is 3yrs old and outwalks me. we walk at least 2miles a day. (weather permitting) he is long legged which i hear makes a difference. when he was younger he would sit down when he was tired. they let you know if they have had enough. bring water because they dehydrate easily. foaming and heavy panting is a warning sign. romeo is hyper and walking helps keep him calm when he's at home. plus the excercise is good for me too.