I just read a thread where someone described how they started a marathon if poor condition... felt injured by 11 miles, and by mile 18 couldn't run... but walked to the finish, because he/she was "thinking of the charity".
I've seen this sort of comment many times before... so am I missing something, because what charity would expect you to risk injury?
What is the etiquette? If you sponsor someone to run a marathon and they pull out injured before the start, or half way through... would you expect to pay up or not?