A long walk always is a big joy for Oskar . Already at home when all signs point to a walk, you can't stop him anymore. He squeaks for pleasure, runs up and down and is waiting totally excited before the door. It is not so, that he then is trotting sluggishly on our side, if so, he would not be a hunting terrier. He wants to run, retrieve,  rummage - simply diminish his pent-up energy. It is really a joy to watch this dog . Having him in the leash all the time during a long walk, would be a torture for both sides. But if Oskar is requested by my husband to go by foot, also without leash, he does it.  Certainly, you notice how hard it is for the dog, as there is  so much interesting to see waiting to be discovered by him, but until the order  "Go" he torments himself. I would classify the danger that he runs away as very low. Even if other walkers with or without dogs come, certainly, he runs there, but then comes back again immediately. Only some special dogs let us leash up Oskar before they come nearer or go into another direction.