Malemute Kid wrote:
No, you are entering "Wariner should run 800m" territory. There is a reason Rudisha has not times listed for 1500m
I would agree with you except that the aerobic/anaerobic energy profiles for the 8/15 are much more similar than the 4/8. It's difficult to be great at both 4 & 8. It's not as difficult to be great at both 8 & 15.