That’s actually not accurate. At an average of 400 calories per hour of slow jog (4 mi/hr) that is 8,000 calories—or about 2 1/3 pounds.
4 mph is a very slow jog. It is just a brisk walk.
Wikipedia refers to a definition of jogging as less than 6 miles an hour. So at best a “fast” jog might be 5 mph and an average one, say, 4 mph—hence what I quoted bwing common on the Internet.