Congrats on your success ESTI. I’m not all that familiar with AS’s training with Farah and Rupp but what you describe sounds similar to the Horwill 5 pace system used by Coe and with high school athletes by Scott Christensen and Lyle Knudson. I have read some of Salazar’s interviews from a few years back and he mentioned that in retrospect if he could have changed aspects of his own training he’d have definitely moved away from his high mileage approach to a more balanced program with a much greater speed emphasis than he ever had used with himself. I have now had a few move up from sprints to 800m so I’ve had to pick up a bit of mid distance information, programming though I still tend to be more comfortable to a speed based approach. This will be the first year I will use some intensive tempo with my athletes though as a high int. day (the only way CF would have agreed with such I’m sure) with extensive tempo or cont. recovery runs of short to moderate duration (20-35’) but I will always keep elements of speed in the program. The most important aspect I believe I’ve learned for both sprints and 800m in recent years is that that it’s completely fine and no compromise to use longer cycles in order to include all of what is deemed important and that the athlete won’t necessarily lose the training qualities particularly when they have extensive training backgrounds, i.e. use a 2 week cycle then repeat even if not the same session but at least the same theme.