The GFA and championship times for both genders and age groups are all set to fill quotas. If the women's times were set as harsh as the men's the numbers would drop hugely, which would cause a big imbalance.
However, when you check the current world records, it's men 2:03 v women 2:15.
So 12mins difference at the very top, yet women are afforded 30mins more than men for the championship start, and even more for the GFA.
That 2:15 was run by Paula Radliffe in 2003, and noone has come within 2mins and 55ish secs since, in 9 years. If that had been a Chinese woman, or a different nationality with a history of doping, I think the media would have been all over it, suggesting all sorts.
Compare it to other long lasting world records, like the 1500 and 3k for women, both set by Chinese athletes. Noone has come close to the times in 20years! Yet the runner involved never failed a drugs test. Instead she underwent incredible training and took on wacky substances like "turtle blood", yet the stain of doubt is always on her as China were found gulity of other doping at the time, along with her own coach!
Back on the marathon, I know a 2:42 woman. Now that's pretty fast, probably top 15 in the country for women.
However, she's still a good 20mins off elite pace. So wouldn't start along side them, so would have the lonely run Piers suggests.