THE repetitive laps of the playing fields at Kinross High School , which Laura Muir regularly undertook on cold wintry days, were largely solitary pursuits, the soundtrack provided by echoes from the playground or the gusts blowing inland and westwards from the North Sea. It would have required quite a leap of imagination to believe that, 10 years on, this unassuming pupil would be running to an accompaniment of a din of enthusiasm and a global television audience now primed to watch her excel.