So you are looking for a compact treadmill to get a good workout indoors? The Reebok i-Run 3 has you covered. It is a gorgeous workout machine with a 15HP motor that reaches 8mph max speed. It has 8-piece elastomer cushioning to go easy on your joints.
This treadmill has a console with 12 preset workouts and 3 programs. It has built-in speakers and hand pulse sensors. This exercise machine has a 47 x 16″ running area and can handle users up to 220lbs.