Benny: he’s right- but only for someone more like Vlad’s size… But if you are a lot heavier than 160 lbs, of course it’s going to be more energy required… See below for a guideline:
I think this is a pretty good rough guide… I usually shoot for 400 calories every session, and it takes me 3.5 miles of running to get there according to the machine (set for 160 lb person probably)…
One other thing, note from guide above that yeah, it sucks it “takes so long” but then if you up the work rate (by moving faster), you can expend the same amount of calories in a shorter time. But if it takes too much effort at first, build up to it.
Even if you see “small” amounts like 100 calories, etc, “only” after a session, that’s good, just keep working at it and be consistent, as you get fitter it becomes easier to do the same workout and soon you’ll find you can keep going…