Britton, Robbie: - Robbie Britton is a British twenty-four-hour runner and coach who has raced from 3,000 metres up to 261 kilometres in one single day, covered a marathon in 2:29 and raced the UTMB, Spartathlon and a whole host of other road, mountain and ultra-races along the way. He loves to race and to help others enjoy the same experience through his coaching. A popular magazine and website writer, Robbie has written for Runner's World, Trail Running, Men's Running and The Guardian, amongst others. www.fastrunning.com