A business coach whose sister died of cancer will run seven marathons within seven days to raise money for charities close to his heart.

Oliver Thompson, from Watford, will be taking on the 185-mile challenge from April 18 to raise money for two charities.

Half of the money he fundraises will go to The Hospice of St Francis who helps people managing or recovering from serious illness.

He said he chose the hospice after seeing his sister, Sarah's, journey when she was diagnosed with cancer at age 29.

Sarah died from cancer in 1992, when she was 32.

Mr Thompson described the mother-of-one as once a fit and healthy person.

He said: "Spending time with her did influence my decision making.

"I think it's important all of us understand how privileged we are to be healthy.

"My sister was a healthy person but she didn't have a chance around her health.

"The work the hospice does is amazing and are a great support structure."

Mr Thompson has decided the other half of the money will go to his friend Rodger Hughes' fundraiser Ready Seb Go.

The fundraiser is in support of Rodger's son, Sebastian, who suffered multiple health complications since he was born prematurely in 2013.

Mr Hughes' suffered a seizure caused by a brain tumour which meant he needed to stop working and be cared for full time.

The money will help him raise awareness about his situation.

Mr Thompson said there will be two routes he will change each day.

One from the Watford Football Club to Berkhamsted and the other from Uxbridge Town Centre back to the club.

He added: "I feel really excited. People say to me it's going to be difficult but my job is about turning difficulties into possibilities.

"It's a lot of commitment but I think comfort can be the most dangerous thing."

To donate go to: uk.virginmoneygiving.com/oliverthompson11