Thousands turned up to watch and cheer on charity mud racers as they slogged across a 440m (1,440ft) stretch of riverbank at low tide.
The annual Maldon Mud Race in Essex saw Vicki Riley claim the title of fastest woman, while first-timer Joe Griggs was the first man to cross the finishing line.
Most people managed to complete the task, but a handful of straddlers had to be extracted by paddle boats and ropes as the tide started to rise.
Here are a few pictures of those plucky people, who helped raise some £40,000 for Essex charities.
Chris Radburn/Fixedpoint MediaThe tide has gone out and they're off…
As it happened: Live reporting from the Maldon Mud Race
Watch mud race video on BBC Essex's Facebook page
Lewis Adams/BBCHundreds tooks part, some getting stuck, as they eventually made it to the finishing lineChris Radburn/Fixedpoint MediaUnidentifiable and struggling to stay uprightLewis Adams/BBCJoe Griggs won the race as the first man to cross the finishing line – and only looking slightly muddyLewis Adams/BBCClean seems to be the theme to winning with Vicky Riley claiming the fastest-woman titleLewis Adams/BBCHuge cheers were heard for the last across the line, while four people had to give up as the tide was risingChris Radburn/Fixedpoint MediaShe just might have ruined her costumeLewis Adams/BBCFinisher Joel Hicks, 46, from Leicestershire, was taking part in his 20th raceLewis Adams/BBCBBC Essex was represented by two presenters who were Maldon novices – Jodie Halford and Akylah RodriguezChris Radburn/Fixedpoint MediaSome girls are muddier than othersLewis Adams/BBCTea and a biscuit was served by Andy Munday, Halstead mayor and Linda SmithMatt Mackay/BBCNick Spit travelled from the Netherlands to take part in this "crazy race" after seeing videos of it online, and wore his mother's gown (pictured before the race, needless to say)Lewis Adams/BBCAnd at the end , all they wanted was a hot shower, but had to make do with an open one and a long queue
