If your sole purpose for running is to lose weight, but you're not seeing the results you're after from all your hard work, that old saying, "Change or remain the same," totally comes into play here. Mix things up by including these four types of runs in your weekly schedule and you're sure to notice a difference.
Along with these four different types of runs, be sure that at least one of them is on a different surface than you're used to. If you always run on the sidewalk, hit up some dirt or woodsy trails. If the treadmill is your go-to surface, get outside and run on a track or on a sandy beach. Different surfaces and routes will challenge your muscles in new ways, making them work harder so you get stronger and burn more calories.