Stefaan Engels also holds the world record for completing the most "Ironman" Triathlons in a year. He did 20 in 2007/8.
This is his second attempt at the 365 day marathon running challenge. The first time he injured his leg. This year he attributes his success to running a slow pace over each 26.2 mile marathon. He averaged 4 hours per marathon day. Four hours!!
He stated "I wanted to inspire people by showing that if I could run a marathon a day for an entire year, that anyone could run or bike a little each day or do something about their weight problem." I would certainly say he succeeded at being inspiring.
I'm going to just stop typing, take a rest and ponder this for awhile.