Intrepid runners rally to break endurance world record
John Stocker (right) and Matt Blackburn have broken an endurance running world record at Knettishall Heath - Credit: Challenge Running Ltd
A pair of intrepid runners have pushed themselves beyond the limit of human performance to simultaneously break a coveted endurance world record
John Stocker and Matt Blackburn achieved the Herculean feat during an event at Knettishall Heath, on the Suffolk-Norfolk border.
John Stocker broke an endurance running world record at Knettishall Heath - Credit: Challenge Running Ltd
They had begun competing at lunchtime on Saturday (June 5) in the Suffolk edition of Back Yard Ultra, which challenges participants to repeatedly run a 4.167-mile trail route.
Those taking part have one hour to complete each loop and must be back in time to start the next - or they are knocked out.
Matt Blackburn broke an endurance running world record at Knettishall Heath - Credit: Challenge Running Ltd
The race continues until only one person is left competing.
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As of Monday afternoon, Mr Stocker and Mr Blackburn had been going head-to-head for 76 hours. The previous record of 75 hours was set in Belgium last year.
John Stocker broke an endurance running world record at Knettishall Heath - Credit: Challenge Running Ltd
There will not be an official winner of the event until one of the two fails to complete a solo lap within the hour.
Matt Blackburn broke an endurance running world record at Knettishall Heath - Credit: Challenge Running Ltd
John Stocker (left) and Matt Blackburn have broken an endurance running world record at Knettishall Heath - Credit: Challenge Running Ltd
More than 50 people entered Suffolk Back Yard Ultra at Knettishall Heath - Credit: Challenge Running Ltd
The runners have had to continue overnight at Knettishall Heath - Credit: Challenge Running Ltd
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