If you have ever thought about doing something a little crazy like the Dopey Challenge in Walt Disney World, but are unsure if you can make it, then perhaps this book can help you to make a decision. You don't know what the Dopey Challenge is? Just imagine doing four races in four days and every day the race distance is at least doubled - and all of this in early January. You begin with an easy 5km run on Thursday, a nice 10km run on Friday, a warmup...