The most dangerous worldview is the worldview of those who have not viewed the world.

- Alexander von Humboldt

The ÖTILLÖ is a gruelling swim-run race in which competitors race over land and water.

Adventure journalist Tarquin Cooper gives a first-hand account of the lessons learnt from running in wetsuits and swimming in trainers. It’s the adventure sport that’s exploding in popularity. Forget triathlons, mud runs and so-called Obstacle Course Racing (OCR). The most highly prized t-shirt to get these days is to complete an ÖTILLÖ race.

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