Organisers of this years Big Chill swim, which took place in Windermere on Saturday, say it was a massive success.
Five hundred and eighty people aged between sixteen and seventy took part, that's more than double last year's turn out.
Swimmers from across the world made their way to the Low Wood Bay Marina and braved the minus five water temperature to take part.
Organisers Chillswim are hailing it as a massive success, with spectators standing in the rain for 7 hours to cheer on the competitors.
More than 500 people braved the freezing temperatures on Saturday to take a dip in Windermere.
The aptly named Big Chill Swim was held for only the second time, but organisers hope to make it a key feature in the open swimming calendar.
Matthew Taylor reports.
The Big Chill Swim at Low Wood Bay Marina on Windermere is now in its second year.
It's grown from around 200 participants last year to 570 who took to the water today.
Wet suits are not allowed so the swimmers have to brave temperatures of 6 degrees Celsius with just swim suits and trunks.
Open Water swimming has brought many people to the Lake District in recent years.
It is being described as Britain's fastest growing extreme sport and this summer Buttermere will host the biggest race of it's kind in the UK this year.
It is a 10 kilometer swim and to try to tempt more people to take part, organisers have held a taster swim on Windermere.
Ryan Dollard has this report:
To find out where you can take part in outdoor swimming events, click here.
Eileen Jones from Head to the Hills is hoping more people think about taking part in open water swims:
Despite the cold water, the open water swimmers found the challenge great fun:
A group of brave swimmers braved the elements in Windermere to take part in an open water swim.
The thermometer read just eight degrees, but despite the chilly water they all seemed to enjoy their morning dip.
Scores of swimmers will be braving the cold waters of Windermere today to join in with an Open Water Swim event.
Organisers say anyone can come along but suggest people do not forget to bring their own wetsuits and thermal underwear.
The swim is suitable for all abilities and an experienced coaches will be on hand to give to tuition to any newcomers.