Best method is for the human(s) to ride mountain bike(s).
The hound(s) to run on foot.
If I take Sasha to the off leash park, both she and I get a good workout. And we can stay together much more of the time than if I hoof it.
This simulates best the genetic urge of the dog to run with the pack.
Rick McCharles 
Fred used to run Oliver on the bike around the neighbourhood. He was On Leash of course, but it wore him out for at least a little while and then it was time to go again.
Have fun!
Of course, even better is running the dog behind your Lamborghini. They go way faster that way.