Yes, read carefully. From the original source (RW)…
In the next couple of weeks, I decided to check it out I played around with lots of mathematical equations and talked to about 100 runners of widely differing abilities (from a 2:09 marathoner to several well over 4 hours), and darn if the Yasso 800s didn’t hold up all the way down the line.
I don’t believe this. From my observations, they do not hold up even in the majority of cases.
Want to run a 3:30 marathon? Then train to run a bunch of 800s in 3:30 each. Between the 800s, jog for the same number of minutes it took you to run your repeats.
Sorry, not buying it.
The rest of the time, just do your normal marathon training, paying special attention to weekend long runs. Give yourself plenty of easy runs and maybe a day or two off during the week.
But don’t skip the Yasso 800s. This is the workout that’s going to get you to the finish on time.