Comedian John Bishop is to undertake a gruelling triathlon for charity.

Starting on February 27, he will attempt to cycle, row and run 290 miles from Paris to London in five days.

He will start his BT Sport Relief Challenge by the Eiffel Tower in the French capital, and cycle 185 miles to the coast in less than 24 hours.

For the second leg, he is hoping to row from mainland Europe to the UK – an ambitious task for anyone, let alone someone who suffers with bad seasickness.

He will be joined by a team of celebrity rowers including Andrew Flintoff, Davina McCall and Denise Lewis.

The final stage of his epic journey will see him take on three marathons in three days, finishing in Trafalgar Square in London on Friday March 2.

Celebrity friends including Dermot O’Leary, Frank Skinner and Robbie Savage will provide motivation when they run alongside him.

He is hoping to raise enough money not only to pay for a vaccine against five deadly diseases for 250,000 children in Africa, but also help people living tough lives in the UK.

He said: “I must be mad. I’m a man in my mid 40s, a bit thicker round the middle than I’d like to be and I’m about to take on the biggest physical challenge of my life.

“Up until a few weeks ago I’d never even sat in a rowing boat and now I’ve got miles of water to cover, then there’s the cycle and don’t even mention the word marathon to me.

“I know there will be times during the challenge when I’ll be freezing cold and fed up but when I’m down I will think back to the people I met in Sierra Leone earlier this year and I’ll know every penny I raise really will make a massive difference to people’s lives.”

Bishop’s Week Of Hell will be shown in a BBC documentary to be broadcast in the build up to Sport Relief Weekend, which takes place from March 23 to March 25.