Just a few thoughts?.
John P, normally I?d say go with the Karvonen, but for a little while you may want to go even easier since part of Hadd?s approach is that many times runners don?t start easy enough.
Laissez Faire, interesting topic about the ?paralysis through analysis?. Part of the problem is that if someone says on a message board ?to go real easy? on your recovery days or when starting out your base phase, what does that mean? Highly subjective, no? Actually, Hadd is not a huge fan of the monitors either, though they can have their place in training. The goal would be to learn how to train appropriately without them. There definitely is a balance between using/analyzing data and just running. For example, I work for a large corp that is well known for having an extremely low operating expenses line on the P&L. However, we have a comparatively higher number of financial analysts and such as we look at and slice financial data every which way to Sunday. So, we incur extra costs to drive total costs down. So, I guess what I am getting at is that I think one can use data/technology/what is learned from science(physiology) to help train as efficiently as possible, but I do appreciate your point (the gritty work ethic must never be lost). In Pfitzinger?s book (something like Road Racing for Serious Runners) he gives two weeks of his training that were like 8 weeks from his 2:11 NYmarathon. Interestingly, he says that knowing what he does now, if he would have changed anything, he would have run his easy days easier. Thus is notable given all the info Hadd has provided.
Somayhem, I?m confused. Is 145hr 8+ min pace, or is 149hr sub 7? Are you saying that it is the heat that does this?
Onionbush, 3hrs is a long time. I think that 2 ? 2.5 should be good, but I hate advising less especially if you want to do more. Regardless, be careful. If you stay away from injury, that marathon time is going to drop bigtime.