The Horizon Fitness 7.8 AT is a beefed up treadmill for runners that want to pay for engineering more than screens and technology. This is no doubt a heavy duty treadmill coming in at more than 300 lbs with a powerful 4.0 hp Johnson Digital Drive motor that responds 33% faster than its competitors. It has a full size running area of 22″ x 60″ which is ideal for running and HIIT training. Speaking of HIIT training, Horizon has included the twenty minute Sprint 8 workout usually reserved for their premium Matrix Fitness line!