More than 50,000 runners are expected to join the London Marathon on 27 April, after the event through the capital’s iconic sites helped raise £73.5m for charity last year.
Some people will be pushing themselves to achieve a competitive time, but other participants will be running in fancy dress.
A shark, a Rubik’s cube, a teddy bear, a rhinoceros, a Christmas tree, a three-person caterpillar – these are some of the outlandish and uncomfortable costumes people have worn to complete the 26.2 mile run.
We want to hear from you. Have you completed a marathon, or other running event, somewhere in the world and worn a strange and amusing costume? How was the experience while running? Why did you do it, and what did it mean to you?
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Share your experience
You can tell us your experience of running a marathon in costume using this form.