I do not know the conversion factors derived at by others but this is
the best I could make. These factors are only valid for distances
given, for both shorter and longer distances they are wrong. These
factors are based on todays two best world records in this range,
that are Guerrouj's 1500m and Gebrselasi's 10000. Strictly these
factors are for men, but the womens world records give factors
differing only in the fourth decimal - that is, when the strongest
women records are seen as equally doped... From these factors you can
calculate the difference two mile / 3 kilometer as 1.0786 or 1.0787.
The number of decimals in the table below of course is ridiculous,
round them as you please. You can also multiplicate the times below
with 206 (the number of seconds of Guerrouj's record) to find equally
good record times on other distances - but only when you believe in
the method I've used.

Weia Reinboud (Netherlands)



time meters

1 1500
1.078748465 1609.344 1 mile
1.363211391 2000
2.108909028 3000
2.274686983 3218.688 2 mile
3.651844792 5000
7.683252427 10000
16.1407544 20000
17.08998047 21097.5 half marathon
17.47572802 21542.41 one hour (hypothetical distance)
20.49079138 25000
24.89882394 30000
26.85608055 32186.88 20 mile