More than 40,000 people of all ages and abilities took part in this year's London marathon to push themselves to the limit and raise money for charity.
But one of them attracted a little more attention in the final minutes of his race - because he could not cross the finish line.
Lukas Bates, from Maidstone, Kent, dressed up as a Big Ben, but his costume was too high to make it.
He needed some help to finish the gruelling task.