First of all, thank you for taking the time to provide a detailed reply providing more insight into Clara Santucci, the marathoner, which prompted me to do further, insightful research. Clara is a serious marathoner with the Rio 2016 marathon focus. Everyone on that list, except for Sara Hall and Becky Wade, has already run a faster marathon that Clara. Wade had a great debut last December (like Clara did three years ago), and thus has unknown upside potential at the distance. Hall has the faster turnover promise, but unknown marathon potential. Clara HAS already demonstrated marathon consistency, but appears to have plateaued. Your info indicates there is progress occurring. If you look at Clara's times for shorter distances, she appear's to already be aerobically developed across all distances through the marathon. So now how does she get faster at the distance?I listened to Clara's post-Pittsburg interview; her softspoken nature reminded me of Bill Rodgers. Maybe there is a resonance there with a fellow east coast marathoner? After years of logging big volume, investigate the new stimulus in his training after which, he broke through and dropped his marathon times: he put in track training with Bill Squires' club. (Note, this is specifically for Clara, and not necessarily recommended for all on that list; for example, Sara Hall probably should now do months of what she was doing in Ethiopia this past spring: logging volume, easy, some hard, at high altitude.)