The Naked Foot 5K, Grand Rapids

It's a charity race with a back story like none other: bloodthirsty demons have been working in your community's offices, living in its homes, attending its schools. And now they're on the hunt and people are running for their lives. Citizens might be booking it across a field, seemingly far from the chaos, when shapes emerge on the horizon dressed head-to-toe in vampires' telltale black clothes. If you're a citizen, be prepared to run. If you're a vampire—lock in your target.

That's just part of what you might experience on the Vampire 5K, a twilight fun run where participants can register as "citizens" or "vampires" and take off from two separate starting lines. Both camps eventually converge in a chase that finds vamps trying to convert their mortal counterparts to the dark side. Citizens, dressed in white, sport two garlic flags; if the flags are taken before runners cross their finish line, they switch to a black tee and chase citizens. After the race, a moonlit party finds both camps sipping bloody marys during a dance party and award presentation. The race benefits the Mission to Hear Foundation, which provides hearing aids to underprivileged children, adults, and whatever they're calling the age group that comes in between these days.