This is probably isn't that weird, but at Ironman's I've mixed the coke and chicken-broth together for a warm, salty/sweet brownish concoction that was the wine of the gods (at the time). I have a stomach like a goat. I always drink the 'free beer for runners' during marathons.

I think I've just discovered the root cause of why I'm a clydesdale

I think the weirdest thing that i have eaten in a race is a potato wedge dipped in salt.

Of course my wife thinks that it is pretty weird that i eat and actually like gels. to the outside world a small packet of carbohydrate gu is a pretty weird thing to eat so everything is relative i guess.

I eat anything that sounds good during an adventure race. Gummy bears and sour gummy worms are awesome! Fig Newtons are good. Cold pizza. Cheetos. I think ultras and adventure races lead to the more random foods since intensity is a bit lower.

90% of the time I nothing sounds good so I just eat the plainest (and least energy packed food) stuff I see.

I did almost swallow a safety pin that was hiding in a pocket of sportlegs caps during the start of the SF 1/2 marathon. Got 10% down my throat before I was able to gag it up.

Oh - and you ultramarathonners are crazy! I wish I could do what you guys do--but I'll never know because my masochism does have limits.

Had a Red Bull at a Death Valley event. I poured it in a water bottle during a run so that it'd foam up and eek out all the carbonation. Surprisingly it didn't cause any issues--but nor did it give me any wings.

Jelly beans are an excuse for jelly beans.

I have eaten a Bagel and Beef Jerky in an IM race.

Marshmallows?

I had several free beers immediately following Collegiate Nationals last year all I have to say is dehydrated athlete + beer = interesting times

During the Bay to Breakers run here in San Francisco, we have a tradition of stopping into a convenience store on the infamous Hayes Street Hill to grab a cold can of malt liquor to cool us down. If you've ever done the Bay to Breakers, you'd understand. Nothing weird during tri's although I agree that there's nothing weirder or more unnatural than intentionally putting Gu's into one's body.

The other week I went for my long run in snowy 20 degree weather. My camelbak froze so I had to eat snow to keep hydrated. To give it flavor I added some gel and it was delicious! I guess my answer is sno-cones, even though it wasn't really an event.

There's this Ultra I do once in awhile...The Catoctin 50k. Not far from here. It's hard.
One time I was in bound ( out and back course) and rolled into an aid station...they were serving Haggis. And Whiskey. ( s single malt scotch if I remember). The race is in August and so hot...the salty haggis really helped! The Whiskey...well, that helped too.

I have had the cooked potato wedge and salt, and it really hit the spot.
At any marathon there is usually an aide station, most of the time unofficial, that serves beer. I'll always have a little bit, since they went to the effort of setting it up it would be rude to refuse the hospitality.
At the Cheaspeakeman this fall the last aide station before the end of the marathon had beer, and they were grilling cheeseburgers. It smelled so good and the women were wearing grass skirts and coconut bikini tops so I had to stop for a couple of minutes to appreciate their hospitality. Beer and a burger never tasted so good.