Rick, you may have a point there, which is often overlooked.
To be quit honest, I don't know, I only saw the runners which finished the maraton - but I do agree that it is most likely that nothing happend to the others - other a visit to the hospital for overheating
.
When it comes to adrenaline, you may be right, only I don't know how much that matters, but I suppose it could matter. Any doctors around?