I think that depends on you and Rambo. I take Brie out for about 15 to 20 min, the toad we walk on is really hilly and I would say equivalent to about 8 city blocks in total. But, when it is really hot or humid, I cut it down to half that, even less of Beie seems to be having any kind of difficulty. If Rambo starts breathing really heavily n closing down, I would stop and shorten the walk. Does that make sense? What I've seen w her is that she won't stop necessarily if she starts to overheat. So I think we have to watch for any signs. Just my thoughts
We go for a brisk 30-45 min walk everyday, sometimes even two! We started out just going around the block, and then we just kept going a bit longer. It really helps get the energy out!! And Tucker loves his "walkies".
It really depends on the bully and how hot it is. If it is hot outside I wouldn't even go for a walk. Here it get hot in the summer, so if we do go for a walk it is early morning or late evening and not very far at all.