FROM THE EDITOR…
What's the toughest race you've ever done? Of course, it's all relative depending on our fitness, ability, available resources and time to train. One person's super sprint may be as much of a challenge as another's triple-iron distance. For me, it was an ÖtillÖ swimrun a few years back. Taking a little over eight hours it was by far the hardest thing I've ever done with multiple strong currents and hilly trails. It's here that the ‘relative experience’ factor comes into play, though – as even that pales into significance compared to the multisport races we've identified here as being the hardest on the planet. View these as ultimate challenges of human endurance if you like – and even if you'll never attempt one, sit back and read about them…
