I am as impressed with your 2:36 performance with the same interest as your early 4:20. But don´t be upset. In 5 decades I´ve seen and knew so many outstand performances and after some years they are broke that i´m as impressed with your 4:20 as i´m with 2:03 marathon. It´s not a question of impression it´s a question of the right training to able certain performance.
But there is another reason why i´m not impressed. Because i coached 2 soccer football/players that with no special training relate to the marathon, once they decide to run the marathon and one did 2:22 and the other did 2:18.
The question is not about performance impressed but the training that able certain performance.
Why do you think i don´t respect you effort to improve ? I do. But if you ask me what i think myself, i think that to train so much to run 2:36 it´s someone with an obsessive and quite alienated temper that isn´t able understand one average performance in the universal context.
One thing is the required training for the mile improve from 5:00 to 4:40 and fother thing is or the marathon training need. You mix both things, but you can´t, the marathon training needs more volume mileage than the mile.
But what you did as training it´s a your individual option, but i don´t think it´s a good training advise for someone that is a 4:40 mile runner or a 2:36 marathon either.
I also i coach non-professional average runners. Some of them did the kind of improve you did right before they start training with me. But they did with no more more than 60-80miles average in about 12 weeks and it´s all. Besides in my analysis and if i consider their life routine and their need of recover to not overtraining if they would try to run so many miles as you did they wouldn't done what they did and they would be smashed by that tuff training even if it´s SLD all the time and all the way long. The fact is that some of this board do advise 100miles, doubles, long runs, hard workouts to young boys, to older runners, to everyone in the attempt to improve from 5:00 to 4:40 mile.
About your comment that i never advise training or offer better trainig ideas,
First of all this is not a forum of training advise. i come here to discuss training not to advise training. Besides my training advise is individual. I build individualized schedules, i don´t think that to post my training for an anonymous guy by the internet got to be a good thing.
To post direct training advise or post my own training as advice on the board as you do or some others they do i don´t tyhink it´s a good thing. For the same reason i don´t post advise based in my own training or my self training experience as you do, i don´t need or feel obeyed to post my performances.
If you can read between the lines of my posts you will see that goes the best training advice of that all. the advice is: don´t train as HRE or Wetcoast they advice. It´s one good training start.
To the guy that said that 2:20 marathon is best than 4:40mile. He is right 2:20 marathon is best than 4:40mile. The reason i wrote 2:20 marathon as an average performance it´s because i know several runner that never did 4:40mile but they did 2:20 in the marathon.
Anyhow i go to say something about me for the critics that take all the time to ask what i did as a runner.
First of all i don´t need to be a good runner to be a good coach or coaches like Li, Renato Canova or Dr. Kostre wouldn´t be good coaches and they are.
My marathon Pb is 2:29 in the marathon but i did 2:32 with 45 years old. My best performances were in short distances. I did 3:39.8 in 1500m in the 70s, may be some of you weren´t born or were you were just kids.
I get my best performances without be a professional runner but work 9hours a day at that time.
I may resume the training i did at that time.
I did 60-80-miles week volume done in singles, one hard track workout on every week and one outdoor fartlek workout also every week and no long runs.