Design

The World's Messiest 5K Race

Themed for-profit road races like the Color Run are proving to be a challenge for many cities to manage.
Alex Briseño/Flickr

In what's been dubbed the "Happiest 5K on the Planet," participants start with white t-shirts and finish looking like a rainbow. Running is entirely optional, but charging through thousands of pounds of colored powder is a must.

This is the Color Run, an un-timed 5-kilometer "race" that began in 2012, has since taken place in over 130 cities, and is now rapidly expanding into Europe and Asia. There are plenty of reasons for cities to embrace it. Each run averages about 10,000 participants, and can serve as a valuable platform to boost local business and promote active lifestyles.