Henry Rono is chasing the the mile record for men ages 55-60, currently held by Nolan Shaheed. I came across some interesting articles (here and here) about Nolan's training and diet. His regimen is quite unique compared to other runners.
First, he only eats one big meal a day, fasting the rest of the time. His meals consist mostly of fruit, vegetables, and fish. He takes one month off each year, and during that time eats only every other day with just water in between.
As for his running, he builds up a large aerobic base in the off-season with many miles done at an easy, aerobic pace. In the spring, he adds some speedwork and races.
This formula certainly appears to be working for him. It also mimics many features of hunter-gatherer life such as the daily runs (hunting for food), the big meal after training (eating after a successful hunt), and the meal composition of fruits, vegetables, and fish (Paleolithic foods).
