Irish jockey Patrick Mullins celebrates winning the 2025 Grand National on Nick Rockett, trained by his father Willie - AFP The ground drums with the sound of more than 30 horses tearing at full speed towards a hedge. The low thrum is pierced by the odd cry of “on your left!” or “keep straight!” There’s a swish and a thud as horses brush through the top of the fence and land galloping, ears pricked and looking for the next obstacle.