I still don't understand what you are looking for but i can tell you one thing - it is harder to run at e.g.10kph on land than it is on a treadmill.

If Cardio fitness is desired, run on the ground.

The treadmill is good to control your environment.

Unless the treadmill is where your performance is going to be, wouldn't it be better to train in the situation that you will be performing in?