I'll say 4 kms for me. I went for a 3.5 km walk then went to the Gardenscapes garden show and probably walked a couple of kms there but didn't check my "mileage." I put on a dress today that I had quit wearing because it was too tight - it is almost too loose now! The scale doesn't show much of a difference so I must be converting fat to muscle - whatever it is, it feels great!