Who: Kanakuri Shizo
Olympics: Stockholm 1912
After a comically long 18-day journey to Stockholm involving sea travel and a trip on the Trans-Siberian Railway, Japanese marathoner Kanakuri Shizo stopped during the 1912 marathon at a home on the route. Exhausted, he fell asleep and didn't wake up until the next morning. He didn't finish the race that day, but came back in 1967 to finish with an unofficial time of 54 years, 8 months, 6 days, 32 minutes and 20.3 seconds.