LappedMiler wrote:
Aghhhhh!! It has been written about on LetsRun before that a 1500 is not a mile, and that a lot of cramping up, lactic acid-caused tie-up, fatigue-caused collapsing, etc., has happened in those final 100-plus meters of races. So 1500-to-mile conversions are, at best, rough guides to speed, not precise predictors of finishing mile times.
It's fitting and proper that John Walker and Steve Scott have kept their sub-4 tallies free of 1500m-to-mile conversions. They, better than most of us, know the struggles that those final stretches entail. Sometimes they have felt invincible, and other times they have survived hell.
this almost irritates me as much as the dude who claims he could have run a 3:59 mile the day he ran 3:45 in the 1500m.
steve scott and john walker would probably be the first people to tell you that the 1.08 is a precise (though not perfect--there's a difference) conversion method, with a whole lotta data to prove it. walker's 15/mile PRs are identical using 1.08. scott's mile PR is actually a good 1 second faster than his 1500, so obviously this is not perfect, but fairly precise. el guerrouj's PRs go the other way, with his 1500 about a second faster than his mile. but scott's mile PR came during a career-defining race in oslo, and by el guerrouj's time, the mile had already fallen in international stature, so he ran fewer. i'd still call a 1 second margin here fairly precise, but maybe it's not by scientific and statistical terms.
as far as the "struggles that those final stretches entail" goes, i can say that the last 100 of a 1500, if run properly, hurts just as much as the last 100 of a mile. i've never felt that one was harder than the other, though i know enough 15/milers who have a preference between the two, so it's possible i'm in the minority here, but i doubt any of them would say they were more likely to cramp up/tie up in either race...