Hi, I'm only on wk2r3, but I am concerned I have no idea whether I am running at an appropriate speed or not. I had to slow down on this session so am going to repeat it, but can't really tell whether I am going to quick (or slow!) in the first place. Any chance there is an app anywhere that is like a metronome with beats per minute for a decent time to do a 5k? for all I know I might get to week 8/9 and be running for 30 minutes but what if that is loads off of a 5k because I'm running so slowly?