The Bubble Run, Las Vegas

Like a city street after every nearby car wash has malfunctioned, The Bubble Run welcomes participants to play in light, glistening foam. Runners, walkers, jumpers, and skippers cruise their way through five easygoing, untimed kilometers, each marked with a 6-foot-deep bog brimming with colorful foam and floating bubbles. Bubbleteers armed with foam-slinging cannons ensure that each adventurer receives a healthy dose of bubbles as they pass, running safely thanks to the dry makeup of the foam solution used. Racers clad in white may start clean as a whistle, but by the time they cross the finish line, they’re dyed like a rainbow, finally readying them to sneak up on a leprechaun. Then the fun keeps going—live DJs and bubble cannons amp up afterparties to celebrate runners' efforts. Proceeds from each race benefit local charities.