To speak "metaphorically", Jerry's guys have not made the right "sacrifices" to the marathon gods. The marathon gods do not bestow fast times through secret training programs and the correct "special" workouts in the managed build-up to a key marathon race. Just do the work. Read the training logs of Hodgie-San and the GBTC. Those guys didn't have either the [track] talent or recuperative/therapeutic support and training advantages/advances (?) of Jerry's guys. Yet, they got results through hard, consistent work - no special formula. Run lots of miles. Regular long runs. Race often.