Thanks for the reply.
I feel like the 140's that you and
@tri-man 47 mentioned is probably right. I was admittedly doing all my runs before last year's half and 15K at a moderate pace that the gray zone describes...all upper 150s to low 160s. That got me through those and is what I needed to do to maintain my interest and see improvement (especially at low mileage). But adding in more miles and runs that have actual purpose, I know I can't maintain those efforts on the easier days.
@bushdocda mentioned something previously about having to slow up in order to have any sort of legs for the SOS runs...and I am starting to experience that myself. I went out Saturday for 10 miles after a terrible night of sleep, was stuffed up, and just not feeling well. I knew it was going to suck, so I made sure to go slow and I tried to keep my HR in the lower 140s as long as I could...well until I stopped at a cross-walk after 8 miles and my HRM started recording me in the 170s for some reason. I could tell my body was not happy b/c the effort was much more for the pace than what I would have expected.
What was great about that run is that yesterday I felt great. I was supposed to do 5 easy, but my legs had some spring to them which normally doesnt happen after that long of a run, and I did a progression run and got a bump in my V02Max, which hasn't happened for awhile. I know that you all have preached the easy runs before, but seeing it in practice was very helpful.
I just need to find that combination of pace and cadence that allows for something at least smooth feeling and not pushing the HR too high. Right now, I know that my form and other things aren't great throughout due to being lazy and frustrated with the speed. But, practice should make that better.