Remember when you were a kid and really loved playing in the mud? The joy of getting dirty despite finger waving from your mother always offered a thrill. Perhaps that's the reason so many people seem drawn to these outdoor adventure races like Tough Mudder and the Spartan race. It's an excuse to get dirty and feel good about it. After all who doesn't love the idea of a giant co-ed mud wrestling course? It's the perfect excuse to get in the shower.

Here's a look at some of the Spartan Babes in action.