I think what we need to do is get the pace we feel "natural" stick to it as the HR drops for the given pace. Well thats what im doing
I think this is a great statement. That is kind of what happens to me as well. I have a pace that just feels right on runs. At the beginning of HADD training, my HR may end up in the mid150s to maintiain this (I'm at 160 HR for 80%). However, when the HADD miles accumulate, I will have a week where all of a sudden I'm running at this pace and my HR drops into the mid140s. At this point, I'm on my way as I can now train in the low 140s (140 is 70%) at my "natural" pace and pressure is off (and I feel great about myself because all these high mileage weeks are done at a pretty good clip). Then what invariably happens is my pace keeps dropping at the low 140s range. This is what keeps you going. At the same time, your legs take on that steel characteristic (you can do 60-70 mile weeks and feel awesome on every run...no running down, just good running day in/day out. At least that's how it has worked for me.
Then you sprinkle in the 80% runs and on it goes...
Also, for what it's worth. Two years ago I did Hal Higdon's Marathan plan (the Advanced I). It featured speed work every week. I ran a 5K 2 wks before the maarathon and had a nice time. This past spring, after just doing HADD for 4 months (no 80% stuff though) I matched that previous 5K time. During the race I didn't get tired, but kept thinking I can't go any faster!. So for 5K races, you'll never be hitting it out of the park, but for half to marathon, I think you can keep fairly competitive on just the 70 to 75% alone.
Spen. Good luck with the recovery. It will probably do you good to just take the week to absorb all the training anyway.
Edited: 11/11/2012 at 22:36