What is the oldest world record still standing?

Hello

I have no info for Chloe Dygert CdA.

But I can make some assumptions :

1) CdA : 0.17 - this is slightly higher than Dan Bigham 0.167 (6' and 75kg), and lower than Alex Dowsett HR CdA (6' and 75 kg)
2) Air pressure : 993 hPa / 745 mmHg due to bad weather in Europe, I checked for the team pursuit

at 56km/h, power should be around 415 w

Brad had much higher air pressure and higher CdA during his HR.
I guess the air pressure in Berlin these days helped a lot for all the WR.

Filippo Ganna for his 4mn02 new record, IMO :

at 61km/h, power around 585w