As soon as the weather gets a little cool, Tyr is a different dog. He has sooo much energy!
I take him and Ginger to the dog park for a couple hours and then home. That is the only way to really wear them out.
At home they are total nuts. I am living on 1/2 acre-all fenced- and they run and run and it takes hours before they are worn out.
It does help to have a second dog to romp with. Before I got Ginger- Tyr was impossible in the winter. I had to run with him and he would wear me out!!