What we need wrote:
As some other posters mentioned previously, drugs and/or the shoes are the most likely explanations. To suggest that she and her coach figured out a better way to train after two decades of running is laughable.
I'm not saying she doped, but to some of her staunch defenders, ask yourself if a random Kenyan who was B level throughout their 20's rose to the level that Sara is at in their upper 30's, would you not have some suspicions?
It is one thing to be suspicious. It is another thing to think it is the only explanation. Nobody thinks that she has some better way to train. People are saying she is in her best event and training properly for it. If she was dropping a 14:35 5k, you could add me to the what is up brigade. But we are talking about 2:25 for marathoner (i.e. what a 15:20 translates into for a person where the marathon is their event) in the old shoes. Go look at Kastor, Samuselon, Radcliffe and the rest do when the marathon is their best event. Shoes are 2-3 mins. So now we need to come up with 2-3 mins from better training (i.e. responding better to the 110mpw of being a marathoner than the 80mpw of a middle distance runner). Does that seem like a stretch?
We aren't talking about a Cathal Lombard level of improvement where you go from 30 mins to 27:30 in 2 years.