Bryn Griffiths is no stranger to physical training. As a teenager and young man, he was a boxer and competed in the 1974 Commonwealth Games in New Zealand.
Whilst he didn’t win a medal that year, the following year he beat the gold medallist, David Lamour, in a re-match at Cardiff’s Sophia Gardens.
“Boxing taught me about not giving in,” he said. “When you’re tired on the pads with the trainer, they push you even more because in the last round, you need that extra bit of energy to sway the fight. Running a marathon is like that.”