So, you’ve signed up for a marathon. Bravo. Maybe it was the rush of a well-run Parkrun. Or a moment of misguided optimism after one too many beers. Either way, just remember that 26.2 miles is no casual jog – and your body will let you know it. What’s the difference between crossing the finish line triumphantly and hobbling through the last six miles like someone questioning their life choices, you ask? Answer: being smart. That means more than just racking up miles. It’s about pacing, recovery, nutrition and, ultimately, keeping yourself in one piece throughout the block. Here’s some expert guidance to help you on your way.