When we got Bella as a 5 month old pup we knew we could only giver her 20 minute walks which she did daily. This was never a problem as she was always a little nervous on walks. Now she has much more confidence and enthusiasm, so when can we extend these walks and how far can we go? we sometimes have 30 minutes and she's ok but she does like her naps after walks! Suggestions in time would great as miles don't mean much to me! We can go at a fairly good pace when she's not sniffing! the ground we cover is mixed, sometimes pavements and sometimes woodland paths and fields.