Evan Cooper: James Preston's coach on his record breaking 800m run and his Olympic qualification - All Sport Breakfast Wellington

Wellington runner James Preston last week broke the late Sir Peter Snell's 62-year-old national 800m record, winning a meet in Germany with a time of 1:44.04s. 

This was enough for Preston, 27, to secure qualification for a maiden Olympic games at Paris later this year. 

His coach Evan Cooper joined Adam Cooper to talk about their decade-long journey. 

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