article_snippet.sent: Although a university student had never run a marathon before, Callum Ryan, 21, committed a university student to the daunting challenge of running eight of Callum Ryan, 21 between January and September 2015 - covering a total distance of 337.5 kilometres.
article_snippet.sent: Although he had never run a marathon before, Callum Ryan, 21, committed he to the daunting challenge of running eight of Callum Ryan, 21 between January and September 2015 .
highlights_snippet.sent: Callum Ryan, 21, will run eight marathons in each of Australia's states and territories between January and September this year .
  
highlights_snippet.sent: Callum had never run a marathon before when Callum set Callum the challenge .