I live in Melrose in the beautiful Scottish Borders and I am a bus driver in Edinburgh for Lothian Buses. A member of Harmeny Athletics, I took up running in 2008 to lose weight. I was 17 ½ stones and very unfit. My diet was working but I wanted to lose weight more quickly and running certainly made a huge difference. I ran my first half marathon, and badly, in August of that year. I now enjoy all distances, from 5km runs up to 24hr endurance events, even though I have to work hard at it. Because of where I live and my shift patterns about 95% of my training is done on my own - so I'm very proud of what I've achieved.

I have now completed 52 marathons and ultras, usually averaging around 1,500 miles per annum. My most memorable event is being part of the Brathay 10in10 in 2014 and 2015 so I’m thrilled to be back this year. I feel very close to Brathay Trust for very personal reasons linked to my teen years in the 1970s. Crossing the finish line of my first 10in10 rid me of some demons.

Brathay Trust do incredible work for vulnerable and disadvantaged children who have had a bad start in their life. Being able to play a very small part in that by raising much needed funds is a real pleasure. I am very pleased to have raised over £10,000 in 2014/15. Turning 52 years old during the 10in10 and finding that running gets harder each year, this next 10in10, one of the UK's toughest marathon road races, will be a big challenge. I just hope I get chance to take in the stunning scenery.

To support Chris's fundraising please visit www.justgiving.com/Chris-Renton16