This coming Sunday will see the London Marathon come to the capital, and thousand of runners will hit the streets to cover the 26.2 miles of the race.
It’s a very long way and can take even seasoned athletes over four hours to finish but can you imagine, even roughly, how many steps you’d need to take to complete the course?
Well, that it what we need you to do for this week’s puzzle, but to make it easier we’ve given you some answers to choose from. To take part, simply select the number of steps you think is closest to what you’d need to cover the marathon.