Exciting marathon style question

Referring to a certain mile in the race is it Mile 17 or mile 17?

Example: Paul Tergat nearly threw up at Mile 23. Sort of like Game 1 of the ALDS. Or is it ...
Paul Tergat nearly threw up at mile 23.


Edit: We use AP style, at least theoretically, if that makes a difference in the answer.

 

In Charlotte's NASCAR stories, I always change "Lap 21" and "Turn 3" to "lap 21" and "turn 3."

 

We capitalize Turn but not lap.

We only do one marathon a year, so I don't remember. But I don't think we capitalize it.

 

No reason to UP "mile."
Unless, we're talking about about Three Mile Island. And, I'm not so sure you want to be running a marathon or doing much of anything else, there.

 

Just looked out my back window at Three Mile Island and shrugged.

 

And then your arms fell off.

 

That's why Codas can't stop waving