I'm actually kind of impressed by the scheduling and logistics of this over and above the physical aspect. How do you find 365 consecutive days with marathons, and figure out the schedule to do it, overcome travel delays, etc? Not to mention sleeping. It seems impossible.
Of course, anyone who has ever run a marathon knows it's 42.195km (26-miles 385 yards) and we'd appreciate it if you wouldn't round down, thank you very much. :-)
The travel logistics for running in daily organized marathons would be too much. If he were putting daily flights/travel to the next city where there was a scheduled marathon, it would probably be impossible.
That said, still very impressive. Running 26.2 miles a day is amazing. Anyone who can run over 100 miles per week deserves nothing but praise.