My name's Sami Mokbel and I'm running the Great North Run this September in memory of my former colleague Christine Van Emst.

Chrissie was the leisure editor for the Croydon Guardian, where I also used to work, died last year after a long battle with cancer.

So I thought it would be a nice idea to raise money for the fund set in memory which will be passed on to Breakthrough Breast Cancer.

You can find out more about my challenge and how to sponsor me by clicking justgiving.com/samimokbel.