"I used to think people out running in the rain were mad. Now I'm that person!" @kazNI @walledmarathon #reasonsforrunning

The countdown is well and truly on to Sunday's Walled City Marathon, and our series looking at people's reasons for running and their favourite motivational music continues today with 31-year-old Karen McElroy. Karen says running has given her a whole new lease of life. She's lost four stone and found a confidence she never knew she had. She's just done the Belfast marathon and is gearing up now for Derry