The Krispy Kreme Challenge is a race that should be experienced by all. Such child-like joy and excitement! The thought of running 2.5 miles, then consuming a dozen donuts, followed by 2.5 miles back the way you came sounds horrible but it's so worth trying. There is a "challenger" entry as well as a "casual runner" so you have the option of not making a pig of yourself with the donuts. There's a costume contest as well and people bring their "A" game for it. I've run the KKC 8 times and don't intend to miss it any time soon.
Donuts: Delicious! The "hot light" isn't on and it's the middle of winter, but they are as fresh as it gets.
Course: Nothing to write home about. It's from the NC State campus to the donut shop and there isn't a whole lot to see. There are a few hills, but nothing too scary. I wouldn't worry, because you have no chance at a 5 mile PR with those donuts involved.
Expo: Not much to it at all. Like nothing to it. They sell some KKC gear and that's about all there is.
Shirt: The shirts can be clever but for 7 of my 8 years it's been a white cotton T-shirt with green lettering. 2017 was a white cotton T-shirt with black lettering.
Finisher Medal: They've only had finisher medals once in all of my times running the race and you had to pay $5 extra for it. Not a bad deal since the early entry was only $20. The medal is pretty awesome though.
To reiterate, you will not regret running this race if you like donuts and have a soul. So much fun!