I have an Alaskin Huskey, and I just got him about 2 or 3 days ago. The trainer used to be a musher, but retired now because... well... i dont know, because they are retired. ANYWAY, he was telling me the Gipper is one of the best sled dogs he has, most of the tracks he is head dog, and can go 4 miles strait at 20 - 25MPH. I want to test him, but my back yard isnt big enough (Mostly because I don't have a 4 mile backyard [

]) and I can't let him run around without a leash or els he will run away. Any suggestions?