Thousands of runners braved a gruelling 12-mile obstacle course at the Tough Mudder event at Boughton House earlier today (Saturday, May 4).
People from all over the country were taking part in the event, which features about 20 large obstacles in the grounds of the historic house.
The event lives up to its name, being both tough and very muddy, and by the time many of the runners had emerged from the third obstacle they were covered head to foot in mud.
Many of the participants took part in fancy dress, and anyone completing the race is awarded a special orange headband, T-shirt and well-earned pint of cider.
Telegraph photographer Tony Waugh filmed a video of competitors tackling some of the obstacles.
If you have photos from Tough Mudder, email them to email@example.com.