2013 Herne Hill Track League (sponsored by Cycling Weekly)

Doing a bit less, is fair enough, but the sprint TT being half the distance makes it a very different event.

Flying 100m sprints for women?

There is actually more discrepancy in physical performance for sprint events compared to pursuit, but it's not 50%.

IIRC Vicky P's 200m TT in Beijing would have qualified her in the top 10 (or 12) for the men's event!

In my findings, the most significant difference in physical performance (power output) between male and female elite track sprint riders appears at the anaerobic threshold, where female riders produce around 65% of the male's output. Amongst endurance riders the difference is far less, where the females can produce 91% of their male counterpart's threshold power.

These differences are probably not entirely genetic, as the female sprinters will not be kilo training so there would have been less importance on threshold power (which may explain that larger difference), whereas with the enduros both male and female train in this area in a similar way.

So, for the sake of argument, even if the kilo was 100% dependent on power output at the anaerobic threshold, it would still need to be 650m for women.