First, let me say that I really like Ryan Hall and marvel at his running ability.
But his latest blog post on the competitor.com website shows that elite athletes have no clue as to what working parents go through when it comes to squeezing running into their lives. Hall muses about whether he would still be able to spend, oh, ALL DAY AND NIGHT concentrating on running, active release massage therapy, cross-training, nutrition if he had a 9-to-5 job and offspring to shuttle to soccer practice/guitar lessons/play rehearsal ...
Short answer, Ryan: No!
In a way, it would be doable for Hall. After all, running is his job. So that takes care of the 9-to-5 aspect. But he wouldn't have the luxury to be "self-absorbed" (his word, not mine) about exactly what time he eats before his second, evening run. I believe Hall's Mammoth cohort, Meb Keflezighi, has three children. But, from reading stories about Meb and catching his Tweets, his wife does most of the child-rearing -- to which Meb often praises her for on Twitter.
My advice to Hall: Enjoy your youth and your tremendous talent. One day -- probably way far off -- you might actually have to squeeze in that evening run with a full stomach. Don't worry. You'll deal with it.