Biggest Loser Walking Workout

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Hey there...I'm switching out 30 DS with Biggest Loser Walking Workout...it's 4 different 1 mile walks that progressively get harder...the first one is basically walking wtih a few variations and arm movements and I just listed it under "walking" on the calorie counter...but Walk 2 incorporates weights and Walk 3 throws in SEVERAL bouts of jogging and jumping jacks. So my questions is how should I count it...I don't have a HRM (yes, I know I need one) but I need just some kind of guesstimate until then. Thanks for the help!!