British astronaut Tim Peake said training is going well for his version of the London Marathon, which he will run on a treadmill on the International Space Station (ISS). Peake made the comments in a question and answer session, in which he showed off a harness that keeps him bolted to the treadmill on which he will run.

Peake said: I dont think you can ever do enough training for a marathon. But Ive certainly been putting in the miles on the T2 treadmill – thats what we call it up here on the Space Station. And Ive done a couple of half marathons and a little bit longer distance than that as well. So Im confident I can get on and run the marathon on Sunday. But Im sure there will be a few points where Im wishing I did more training.

The 44-year-old said the excitement of the actual marathon event on 24 April will keep him motivated on race day. One of the main memories I have of 1999, when I ran the London Marathon before, was the atmosphere and the crowd and the other competitors taking part. And that spirit really lifted me the entire way through the race.

So in order to try and get some of that up here on board the Space Station, Ive got a couple of things: Firstly, Ive got the Run Social app, so Ill actually be looking at the route I am running, and Ill be running along with everyone else whos running the digital version of the London Marathon.

And also, hopefully, Ill get the tele sent up to the Space Station as well, so at times Ill be able to see whats going on with the real race down in London, which will be a huge boost to me to be able to know that Im running along everyone down there.

Peake said he expected the weightlessness of space to help him recover from the gruelling 26.2-mile run. He said: In terms of recovery from a race or from running training, actually weightlessness is one of the perfect environments because the moment you stop running and the moment you get off of that bungee system, your muscles are in a relaxed state.

And I do think that we recover faster up here from any kinds of aches or strains. And muscular problems I think do recover quite quickly up here.