In reference to the El G training link...
First of all, El G's training program is from 6 years ago and when he was already beyond a high school aged level and running at a world-class level. It also does not indicate that he has trained with weights throughout his teen years as do many Americans attempt to do. He also trains for the 1500 meter race, which is not considered a long distance event.
All of his weight training is hardly done at a signficant level for long distance training. It is a limited number of exercises done with few reps and light weight, done during the off-season, done only once every 4th day, and done more so for posture or speed development strength than anything else, something a 1500-meter runner is going to need. Yes, there are a few that I would not do, (i.e. squats) but again, they are not done at a significant level to affect long distance training nor does it indicate that it was part of his junior level training prior to running world-class times. It also does not indicate that other junior level runners train with weights. It looks more as if El G incorporated SOME weight training AFTER he got to the world-class level, but there is nothing there that indicates it was a significant part of his development to the world-class level. I'm sure there are plenty other world-class athletes who also weight train but it doesn't mean they did so at significant levels as part of their development towards world-class running. Nor does it make it right or prove me wrong. Regardless of how great a runner becomes or how many world records they set, there are always ways to improve the training program and I definitely disagree on anyone's training that muscles that are not sport specific need to be a focus of development.
By the way, it is the Kenyans and Ethiopians who dominate the long distance events at the world-class levels anyway, not the Moroccans.