Here is a compact treadmill that you can use under your desk to get a workout. The JURITS C2 Under Desk Treadmill has an adjustable speed range of 0.6 to 3.8mph. It has a 2.5HP motor. It has a LED screen to show time, distance, calories burned. This compact exercise machine can handle up to 242lbs of weight.
This treadmill has a running belt of 41 x 15″. It has two front wheels that you can use to move this treadmill around.