Great! But times are off?,

I like this app, I have used it to train for half marathon and marathon. My one Issue is it will tell you a total time of a run but the differ pace intervals will not add up to the total? Not sure if I am missing something but it is easy enough to correct by just adding time where I choose.

Poo maker about MapMyRun Trainer - 5k, 10k, Marathon, Half Marathon Training Plans, v4.0.3