HRE:
YOU have the best post on this thread. Lydiard has said for 50 years now that running for a certain amount of time is what good training is about.
Let's break it down and compare different runners.
Jane runs 7 minute pace for the 5km.
Lisa runs 6 minute pace for the 5km.
Mary run 5 minute pace for the 5km.
Jane tries to run 15 miles, because the 100-mile per week schedule says that is what she should do today. She runs 2:00 per miles slower than her 5km pace, so she chugs along at 9:00 per mile for 15 miles, taking 2 hours 15 minutes to get in her average-day run. Her short day of the week is 10 miles which takes her 90 minutes. Her long run, 22 miles, takes her 3 hours 18 minutes to complete. It takes her 900 minutes per week or 15 hours to run 100 miles. I repeat, she is running for 15 hours per week, which is a lot.
Lisa run 8:00 pace on her runs, also 2:00 per mile over 5km race pace. It takes her 120 minutes (2 hours) to run her 15 miler, 80 minutes to run her short day 10 miler, and 176 minutes to run a 22 mile long run; nearly 3 hours. Her total time for per week is 800 minutes or 13 hours 20 minutes.
Mary runs 7 minute pace for her distance work, taking 1 hour 45 minutes to run 15 miles, her average length run, 70 minutes for her shortest run of the week, and 154 minutes or a little over 2.5 hours for her weekly 22 miler. All in all, she runs 700 minutes or 11 hour 40 minutes each week to get in the required 100 miles.
The time differences spent on their feet for the above runners is enormous, from a stastical standpoint. The number of steps that the slowest person takes to run the 100 miles is in the neighborhood of 30-35% more than the fastest runner.
Can you see the potential for injury here? That is why Lydiard advises runners to build to a certan time and then as they get fitter they will run more miles in that time. He knows that not everyone can run 100 miles per week. Only fast runners can in the time frames he has suggested. Ask Kim Stevenson, a respected coach in New Zealand, and he will tell you that Arthur trains everyone diffently.
OUR biggest problem in training relates to one simple fact: we think that everybody can succeed by doing the same workouts, same mileage, same intensity. It is not true, nor will it ever be true. Following principles is what it is all about. Learn the principles and learn about yourself. Use templates that are reasonable and systematic and then refine them as you test yourself using them. The best training plan is yours, the one that works to your innate talents and strengths. This is why Malmo says that you should capitalize on your strengths and mitigate your weaknesses.
I need some sleep. I am rambling. Tinman