I clicked on this thread out of curiousity when it was the first up on the main page.
What interested me is that the question would even be asked. No one would even think twice about it in a bike race from an etiquette point of view.
The fact that its being considered to me demonstates a very differnet culture in running and triathlon from bike racing.
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.