Potato Man wrote:
The 20x200m sounds like a tough session (faster than mile pace), but it would be interesting to know the recoveries.
IIRC Lydiard was not much concerned with recoveries and his guidance was "start the next one when you're ready."
So 4,000m of faster-than-mile/slower-than-800 pace, split into 200s with reasonable recoveries, should have been do-able--the volume not a particular problem for a man with 100mi/wk in his base training.
How far could he run 4:55 per mile? 6 miles? 10 miles? This is a good effort, but I doubt it would be that hard for him.
Just so. That would have been a strong aerobic run at tempo (or maybe tempo-plus) pace.
And yes, Snell was capable of being competitive at longer distances: He once won the NZ cross-country title (over ~8 miles? I can't remember), at a time when that race had some of the world's premier distance runners.
A 660 1:27 seems odd though. I would expect a 1:55 half-miler to be able to do this. Unless the 100 yard runs were done with short recoveries, what is the purpose of this day? Why not 1320 yards at that pace, or a 660 in 1:20 or faster?
This workout, like the previous, is really an example of Lydiard's rarely beating runners up in any single track session.
Just as his base-phase schedule had days of varying volume and intensity, with some days distinctly easier than others, so his track phase had easier and harder days. As someone observed in a post above, our "standard" approach nowadays (hammer a track workout one day, recovery run the next day) is very different.