we do the same but on our bikes, Sim has to hold Meg though because im afraid if she stops to sniff suddenly, i would be off the bike in a flash and in a heap on the floor. funny thing though, she seems to get tired quickly now when we do this, even if its just for 2 miles. However when we do our last walk of the day, there we are, happy to stroll along for 4 or 5 miles talking about our day etc, but Meg is pulling us along like a steam train ?? doesnt make sence to me...