When John Roach's son was diagnosed with autism, he felt lost and out of control.
"I didn't know how to help my son, and one day I went for a run," he said.
"It was just a great way to get rid of the frustration - to let go."
That was six years ago, and John has entered the Great Scottish Run every year since.
If you feel inspired to get your trainers on, take a look at our Get Inspired page on running.