On December 15, the British astronaut Tim Peake will blast off to the International Space Station (ISS) from Baikonur Cosmodronme in Kazakhstan, and before he completes his six-month long mission in space, he will complete many tasks onboard ISS including a variety of scientific experiments as well as running the London Marathon from space.
Tim Peake will run 26.2 miles on a treadmill at the same time when athletes will be pounding the streets of the Britain's capital.
The Digital Virgin Money London Marathon is scheduled to take place on Sunday 24 April. Tim Peake will start his run at 10:00 GMT, the same time when thousands of participants will also start their run from Greenwich to cover the famous Earth-bound course.
"The London Marathon is a worldwide event. Let's take it out of this world." Peake said.
It is interesting to know that Tim Peake has already run the London Marathon in 1999! He finished the race with a time of 3 hours and 18 minutes. NASA astronaut Sunita Williams ran the Boston Marathon on the ISS in 2007.
Running is a routine exercise on ISS as astronauts have to maintain body condition in space environment 250 miles above Earth to ensure they stay in perfect shape and can walk around without trouble after returning to Earth.
RunSocial digitally had mapped out the complete course of London Marathon in 2013 and 2014, which means Tim Peake can run the course as it happens. He will have a digital video of entire course in front of him to get a better feel for what is happening down in the streets of London.
As the former British Army helicopter pilot runs on the machine, his iPad will display how fast he is moving through the course.
"The thing I'm most looking forward to is that I can still interact with everybody down on Earth. I'll be running it with the iPad and watching myself running through the streets of London whilst orbiting the Earth at 400 km above the surface and going 27,000 km per hour."
To offset the anti-gravity, Tim Peake will need to wear special equipment - a harness - which will apply the bodyweight to his body.
"One of the biggest challenges I'll be facing is the harness system." he said.
"In microgravity I would float if I didn't strap myself down to the treadmill, so I have to wear a harness system that's a bit similar to a rucksack."
"I don't think I'll be setting any personal bests. I've set myself a goal of anywhere between 3:30 to 4 hours."
"I am running in space to raise awareness of The Prince's Trust, which has a team running on the ground - Team Astronaut - while I'm running on the ISS." Peake said.