There are gruelling obstacle courses such as Tough Mudder and the Spartan Race that are designed to push people's limits and then there are fun sporting events like The Slime Run. Although it still involves obstacles along a 5k course, it's a more laid-back experience that recalls the annual Nickelodeon Kids' Choice Awards.
A family affair, The Slime Run is arguably one of the messiest courses around. Unlike the Color Run, The Slime Run has an 'ick' factor many people will be drawn to. After all, the more interesting something is, the more people will want to share the experience with their friends, family and social media followers. People get four chances to be dosed in the green goo throughout the run.