Sarah Morwood; overcoming injury and 100 mile races

Sarah Morwood has recovered from two career-threatening injuries to win a 100-mile ultramarathons. She explains how she kept positive during her recovery and why she rarely wears a watch when she races. Sarah is happy to speak with other people who've suffered serious knee or spinal injures – get in touch via her Instagram or Twitter pages. Runner's World's own John Carroll also makes an appearance to explain why he thinks that, contrary to popular belief, human beings weren't born to run after all.

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