If you’re reasonably fit, running a regular old 5K may not pose too much of a challenge. Sure, you’ll be sweaty, maybe even a little winded. But you won’t have mud up your nose, you probably didn’t ...

When you've pounded the same route for the hundredth time in the same old gym kit, it's easy to grow tired of your fitness regime. Article continues below ADVERTISEMENT Throw in a horde of hungry ...