not always wrote:
Would you say that someone who can run 22-23 and 20 miles in 2 hours has the potential to be world class over 800m-10000m meters?
Maybe ability of
So good 200 time, good marathon time, but weaker 800/mile/5k times.
Could this person change to
23/50/1:50/4:05/14:20 with VO2 work? Is that the only main factor?
Running 20miles in 2hours is good but world class elites are different story. For 800m runner it is great even to elites but is it necessary that is another question.
About those under-over distance pb´s it is odd that 800m time is only 1.55. The way to improve is, if the anaerobic side is taked care properly enough (probably is, it´s easy to do), to focus on endurance. Not just long runs or anaerobic threshold or vo2max work alone but all together.
Though you still have to train that anaerobic capacity stuff all year along to avoid losing it, but the main season to that kind of work is only a short period before competitions.
Here is some good stuff from Renato Canova: