I have just started a half marathon training program and am pretty new to running so any advice would be much appreciated.
At the start of the 2nd week now and just completed my first 'long easy run' which was just over 11km.
I'm slightly confused as to what 'easy' should be. At first I was trying to keep my HR within the blue zone 2 which is labelled 'easy' but this was basically a walking pace and ended up completing the run with around 45% of the time spend in zone 3 and 42% in zone 4. The run felt easy enough but should I be avoiding the higher HR zones entirely? My average for the run was 147bpm which is at the top end of zone 3 and pace was 9:30/km (compared to my usual pace of around 6:15/km).
After completing the run virtual coach gave me 'Room to grow' but it's not clear if this was because my pace was too slow or because I was training at too high intensity/HR. Any ideas?