This article is from the Running FAQ, by Ozzie Gontang with numerous contributions by others.
(Tim Tarmstro@metz.une.oz.au)
In `Training Distance Runners' Coe and Martin come up with three sets of
formulas for determining equivalent race performances over several
distances when the performance for one distance is known. They have three
tables to counter problems of athlete specificity.
For long distance specialists (i.e 10k/15km) : Marathon = 4.76Y : 10k = Y
: 5k = 0.48Y
: 3k = 0.28Y
: 1.5k = 0.13Y
For 3k/5k runners : 10k = 2.1Y
: 5k = Y
: 3k = 0.58Y
: 1.5k = 0.27Y
: 800m = 0.13Y
: 400m = 0.06Y
For `real' middle distance: 5k = 3.63Y
: 3k = 2.15Y
: 1.5k = Y
: 800m = 0.48Y
: 400m = 0.22Y
 
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